• Character Dai Llewellyn was the Caerphilly Catapults’ most famous Quidditch player, known for his reckless and foolhardy style of play (QA7). His biography, He Flew Like a Madman, was written by Kennilworthy Whisp (QA). Tragically, he was eaten by a Chimaera while on holiday in Mykonos,… Read More
• Character Damocles Belby was the potioneer who invented the Wolfsbane Potion, and a favorite student of Horace Slughorn (HBP7). Read More
• Character Damocles Rowle was the second Minister for Magic, in office 1718 – 1726. He was a sadistic and cruel man. He first established Azkaban as a prison, despite the horrible effect it had on those incarcerated there. He was eventually viewed as being too “tough on Muggles” and was asked to step down… Read More
• Real Person Daniel Radcliffe is a British actor who is best known for playing Harry Potter in the film series of the same name. Read More
• Character Darius Smackhammer played Seeker for the United States National Team at the Quidditch World Cup tournament in 2014. Smackhammer was considered to be the “outstanding player” from the US team at the 2014 tournament (Pm). A controversial but close-fought match against Jamaica ended when the opposing… Read More
• Character “Dark Lord” is one of the titles of Lord Voldemort, who is also known as “He Who Must Not Be Named”. Read More
• Character Darren Floyd was a Beater on the Welsh National Team at the Quidditch World Cup tournament in 2014. During the 2014 tournament, the skills of the Welsh team were overshadowed and possibly distracted by the controversy surrounding their volatile manager, Gwenog Jones (Pm). Winning their first… Read More
• Character Darren O’Hare played Keeper for the Kenmare Kestrels, an Irish Quidditch team, from 1947 to 1960 (QA7). O’Hare served as Captain of the Irish National Team. During his career he also invented the Hawkshead Attacking Formation as a tactic for Chasers (QA7). He… Read More
• Character Davey Gudgeon was a Hogwarts student in the 1970s who almost lost an eye playing a game in which people tried to get close enough to the Whomping Willow to touch its trunk (PA10). Read More
• Real Person David Bradley is a British actor who plays Argus Filch in the Harry Potter films. Read More
• Real Person David Heyman is a film producer who founded Heyday Films and produced all of the Harry Potter films as well as the new Fantastic Beasts and Where to Find Them series. Read More
• Real Person David Tennant is a Scottish actor who plays Barty Crouch Jr. in Harry Potter and the Goblet of Fire. Read More
• Real Person David Thewlis is a British actor who plays Remus Lupin in the Harry Potter films. Read More
• Real Person David Yates is a British filmmaker who directed the last four Harry Potter films and will direct all of the Fantastic Beasts and Where to Find Them films. Read More
• Character Roger Davies was a popular, athletic Ravenclaw student at Hogwarts, a year or two older than Harry Potter.  He was a Chaser on the Ravenclaw Quidditch Team, and Captain of the Team from 1993 to 1996 (at least). Roger went with Fleur Delacour to the… Read More
• Character John Dawlish was a very capable and self-assured auror. He left Hogwarts with Outstandings in all his N.E.W.T.s. He accompanied Fudge to Hogwarts to confront Harry about his secret D.A. meetings. Dawlish was knocked out along with Kingsley Shacklebolt, Dolores Umbridge, and Cornelius Fudge when … Read More
• Character Dean Thomas was a “half-blood” Gryffindor boy from London in Harry’s year at Hogwarts. History He was a classmate of Harry’s and best friends with Seamus Finnigan (GF7). He was a black Londoner (JKR) who grew up as a Muggle, and thus had always been a… Read More
• Character Dean Thomas’s father was a wizard killed by Death Eaters. He never told Dean’s Muggle mother that he was a wizard because he did not want to jeopardize his family’s safety. His concerns were not unjustified because he was recruited by Death Eaters and murdered by them when he refused to… Read More
• Character Caradoc Dearborn was a member of the Order of the Phoenix during the first war against Voldemort. He went missing and was presumed dead (OP9). Harry saw him among the members of the original Order in Mad-Eye Moody’s photograph at Grimmauld Place. Read More
• Character Death personified, wearing a black hood. In the “Tale of the Three Brothers,” he was angry that the three Peverells had cheated him by building a bridge over a raging river. But Death was cunning and patient, so he flattered them and offered gifts that would eventually lead them… Read More
• Character The Death Eater with the baby head is a male Death Eater whose head transformed back and forth from baby form to adult after falling into the Time Room Bell Jar during the Battle of the Department of Mysteries (OP35). It is not certain which of… Read More
• Character Dedalus Diggle was a member of the Order of the Phoenix in both the first and second wars against Voldemort (OP3, OP9). He also happened to be in the Leaky Cauldron when Hagrid brought Harry in on July 31, 1991. Diggle once bowed to Harry in a shop (… Read More
• Character Sir Patrick Delaney-Podmore was a large, bearded ghost and the leader of the Headless Hunt. He attended Sir Nicholas de Mimsy-Porpington’s 500th Deathday party with a group of his huntsmen, entering with his head under his arm blowing a horn. Sir Patrick and his men ride ghost horses into the party and… Read More
• Character His death was announced in the Daily Prophet (DP2) Probably the same person as D.J. Prod (CS8)… Read More
• Character Nearly Headless Nick is the nickname of the ghost of Sir Nicholas de Mimsy Porpington, a wizard who died in a botched execution on October 31, 1492. He was hit forty-five times in the neck with a blunt axe, but a half-inch of skin and sinew remained connecting his head… Read More
• Character Dempster Wiggleswade was an employee of the Ministry of Magic in the Department of Magical Law Enforcement and one of a team of experts answering reader questions for the Daily Prophet‘s problem page (DP3)… Read More
• Character Dennis was a Muggle boy, living in Little Whinging, who was part of Dudley’s gang (PS3). Read More
• Character Dennis Bishop was a child from the Tom Riddle’s orphanage whom Tom Riddle once terrorized in a seaside cave (HBP13). Read More
• Character Dennis Creevey was the younger brother brother of Colin Creevey, and a Gryffindor student from 1994 (Harry‘s fourth year) to 2001. Muggle-born and with “mousy” brown hair like Colin, Dennis was the smallest kid in his year when he arrived, and thus almost certainly the smallest kid… Read More
• Character Dennis Moon was a Chaser for the New Zealand National Team at the Quidditch World Cup tournament in 2014. During their initial match at the 2014 tournament, Moon collided with Bulgarian Chaser Bogomil Levski, with whom he had a long-standing feud. Referee Georgios Xenakis deemed the collision deliberate, and… Read More
• Character Bertrand de Pensées Profondes was a renowned wizarding philosopher and author of A Study into the Possibility of Reversing the Actual and Metaphysical Effects of Natural Death, with Particular Regard to the Reintegration of Essence and Matter (TBB). Read More
• Character Derek was a Hogwarts student who stayed at school over the Christmas holidays in 1993. Read More
• Character Derrick was a Hogwarts student during the 1990s and was a Beater on the Slytherin Quidditch Team (PA15, OP19). Read More
• Character Derwent Shimpling was a comedian known for his boldness; he once ate an entire Venomous Tentacula as a bet. Though he lived, he’s still purple. Wizards and witches everywhere love his silly sense of humor and his boldness. (FW). Read More
• Character Barnabas Deverill was a one-time possessor of the Elder Wand who was killed by Loxias (DH21). He lived in the early eighteenth century and was a notorious Dark wizard who, with the help of the Elder Wand, gained a fearsome reputation (TBB). Read More
• Character Philbert Deverill was the manager of Puddlemere United Quidditch team during the early 1990s. He was interviewed in the Daily Prophet. Appearances He states that they are changing the design of the team’s robes from a brown colour and denied they are considering chameleon cloaks (DP1). Deverill praises newly signed Chaser… Read More
• Character Devlin Whitehorn founded the Nimbus Racing Broom Company in 1967, revolutionising Quidditch with the speed and precision of his racing brooms (FW, QA9). Read More
• Real Person Devon Murray is an Irish actor who plays Seamus Finnegan in the Harry Potter films. Read More
• Character Dexter Fortescue was a red-nosed, corpulent wizard who was at one time a Headmaster of Hogwarts. His portrait hangs in the Headmaster’s office (OP27). Read More
• Character Fernando Diaz was a Chaser for the Brazilian National Team at the 2014 Quidditch World Cup. A youthful Brazilian team went all the way to the finals in the 2014 Quidditch World Cup tournament, with Diaz and his fellow Chasers Alejandra Alonso and Gonçalo Flores leading the way (Pm). In spite of… Read More
• Character Amos Diggory was a Ministry of Magic official who worked for the Department for the Regulation and Control of Magical Creatures. Amos is a ruddy-faced wizard with a scrubby brown beard. He takes a great deal of pride in his son, Cedric, even to the point of being somewhat rude… Read More
• Character Cedric Diggory was an extremely handsome boy with gray eyes in Hufflepuff House. In 1993, when he was a Fifth Year, he took over as Captain and Seeker of the Hufflepuff Quidditch team. He was a very good student and a Prefect. He is quite tall… Read More
• Character Eldritch Diggory was the fourth Minister for Magic, in office 1733 – 1747. He was popular, and considered one of the Ministry’s “most accomplished Ministers for Magic,” by Garrick Ollivander (Pm). Read More
• Character Dimitrov was a Chaser for the Bulgarian National Team at the 1994 Quidditch World Cup tournament. Along with fellow Chasers, Levski and Ivanova, Dimitrov was a member of the Bulgarian team that lost to the Irish side in the final match of the Quidditch World Cup in 1994. The other members of… Read More
• Character Harold Dingle was a student at Hogwarts in the 1990s. He tried to sell what he claimed was powdered dragon claw to other students as a study aid; Hermione confiscated and destroyed them because they were really dried Doxy droppings (OP31). He also offered to sell Firewhiskey to Seamus… Read More
• Character Dirk Cresswell was a gifted Muggle-born student who went on to become the Head of the Goblin Liaison Office (HBP4). He attended Hogwarts from 1972 to 1979, a year below Lily and the Marauders, and was one of Slughorn’s favourite students (and so probably a member of the Slug… Read More
• Character Young wizard who tried to impress Veela in the forest near the campground of the Quidditch World Cup by telling them that he was a dragon killer for the Committee for the Disposal of Dangerous Creatures. He was actually a dishwasher at the Leaky Cauldron. (GF9). Read More
• Character Dobby was a house-elf, for years indentured to the Malfoy family, until his admiration for Harry Potter goaded him into trying to warn Harry against coming to school in his second year because he knew what Lucius was planning with the diary. Dobby interfered with Harry’s life a number of… Read More
• Character Dodgy Dirk was one of the Muggles present fort he Ilfracombe Incident of 1932.  All the other Muggles present had their memories wiped by Tilly Toke and her family.  However, “Dodgy Dirk” is known to tell tales of a “dirty great flying lizard” that attacked him way back when. His… Read More
• Character Elphias Doge was an old wizard the same age as Dumbledore, with a wheezy voice and silver hair (DH8). Doge was part of the original Order of the Phoenix and at the time wore a “stupid” hat. Part of the Advance Guard that helped Harry in his escape from… Read More
• Character Antonin Dolohov was a particularly sadistic Death Eater, one of Tom Riddle’s friends after leaving school (HBP20). He was sent to Azkaban for the murders of Gideon and Fabian Prewett (OP25). Dolohov escaped from Azkaban early in 1996, along with Bellatrix Lestrange and several other high-security prisoners, and rejoined… Read More
• Character The second child of the unhappy marriage of Orford Umbridge and his Muggle wife, Ellen. The boy turned out to be a squib, and when the parents split up, Ellen took their son with her back to the Muggle world. Dolores never saw her brother again. Umbridge denied even the… Read More
• Real Person Domhnall Gleeson is an Irish actor who plays Bill Weasley in Harry Potter and the Deathly Hallows Part 1 and Part 2. Read More
• Character Bass player with the popular wizarding band The Weird Sisters, and a big Kenmare Kestrels supporter (FW). According to the Daily Prophet, he was married in the fall of 1995 (OP14). He attended Dumbledore’s funeral (HBP30). Read More
• Character Ragmar Dorkins was the manager of the Chudley Cannons Quidditch team in the 1990s, a team with a notoriously bad record. He spoke to the Daily Prophet about Seeker Galvin Gudgeon’s terrible performance against the Appleby Arrows (DP1) and is further reported to be delighted after the… Read More
• Character Dougal was a Demiguise who lived in Newt Scamander’s case. Dougal was one of the creatures that escaped from the case in New York. Because Demiguises can turn invisible, Dougal was especially elusive. While wandering New York City, he located and then watched over the escaped Occamy in… Read More
• Character Dougal McBride played Seeker for the Pride of Portree Quidditch team in the 1990s (DP3). After a scuffle in the air, he lost the Snitch – and therefore the match – when (according to McBride) Appleby Arrows’ Seeker Gregory Cotton cursed him. McBride then turned Cotton’s… Read More
• Character Dougal McGregor was a Muggle farm boy with whom Minerva McGonagall fell madly in love at age 18. Dougal proposed to her and she accepted. However, having seen the heartache and loneliness her mother endured as a witch married to a Muggle, Minerva the next day told Dougal she could… Read More
• Character Distractible Douglas is a character in Miranda Goshawk’s Conundrum 2: The Story of Distractible Douglas, published in the Book of Spells. He is based on a real wizard, but his name has been changed to protect the real wizard’s identity. As his name says, Distractible Douglas was easily distracted. (BoS). Read More
• Character Draco Malfoy is the son and only child of Lucius and Narcissa Malfoy and was a student at Hogwarts in the same year as Harry Potter. He is a rival of Harry, actively trying to undermine him in any way he can. Draco has white-blond hair and a pale,… Read More
• Character Dimitar Draganov was a Beater for the Bulgarian National Team at the 2014 Quidditch World Cup. Draganov and his colleague Boris  Vulchanov, the two Beaters for Bulgaria at the 2014 tournament, were considered “competent” but with “great physical courage” (Pm). The team won their first two matches. It… Read More
• Character A made-up name given to Ron Weasley while he was in disguise during the Great Gringott’s Caper. Read More
• Character Dragomir Gorgovitch was a Quidditch player (Chaser) who transferred to the Chudley Cannons team in the mid-1990s. Mentions Gorgovitch, who came to the Cannons around 1995, is the record holder for most Quaffle drops in a season (DH7). Ron borrowed Gorgovitch’s first name for the alias… Read More
• Character Notorious vampire who inspired the fictional Count Dracula created by Bram Stoker. Father of Vlad the Impaler. Read More
• Character Presumably the creator of Dr. Ubbly’s Oblivious Unction, a topical treatment for scars (OP38). Read More
• Character Dugald McPhail was Minister for Magic during a “period of calm”from 1858 – 1865. McPhail, speaking about the Muggle Prime Minister visiting the Ministry of Magic, said that none had, because ‘their puir wee braines couldnae cope wi’ it’ (Pm). Read More
• Character Aberforth Dumbledore was a tall, thin, grumpy-looking old man with a great deal of long grey hair and a beard (OP16). Like his famous brother Albus, he wore glasses (HBP12) and had blue eyes (DH). Aberforth was the barkeep at the Hog’s Head in Hogsmeade (EBF) and was… Read More
• Character Albus Dumbledore was the Headmaster of Hogwarts for over thirty years, a time period that encompassed both of Voldemort’s attempts to take over the Wizarding world. Considered to be the most powerful wizard of his time, Dumbledore was awarded the Order of Merlin, First Class, and was… Read More
• Character Percival Dumbledore was the father of Albus, Aberforth, and Ariana Dumbledore.  When Ariana was attacked by three muggle boys, Percival went after them in “a savage and well-publicized attack.” (DH2)  He was convicted and sent to Azkaban in 1891, where he would later die. (DH2)  Neither Percival… Read More
• Character Dunbar Oglethorpe was chief of Q.U.A.B.B.L.E. (the Quidditch Union for the Administration and Betterment of the British League and its Endeavours) (FW). Read More
• Real Person Will Dunn is a former child actor who portrayed James Sirius Potter in the final movie. Read More
• Character Profile Dudley was born on June 23, 1980. Dudley Dursley is Harry Potter’s Muggle cousin, and the only son of Vernon and Petunia Dursley of number four Privet Drive, Little Whinging, Surrey. Dudley, in extreme contrast to Harry, was grossly overindulged by both his mother and… Read More
• Character Vernon Dursley is the husband of Harry’s Aunt Petunia. Like her, he is very much a Muggle. In fact, he is about as Muggle as a person can get. He has no use for imagination at all. He is a large, beefy man with very little neck and… Read More
• Character Dylan Marwood was the author of the book Merpeople: A Comprehensive Guide to Their Language and Customs. He carries a wand made of apple wood, a material which shows an affinity for wizards who can converse with creatures in their native tongues. Read More
• Character Dzou Yen was a Chinese Alchemist who studied liondragons (FW). Read More