One morning, while staying at the black ancestral home, Grimmauld Place, Harry woke up early and started to look around (DH10). He walked up to the top most landing where he saw two doors, one was labelled Sirius, which Harry entered first. This had been the first time that he had ever gone into Sirius’ room, even when Sirius had been alive, Harry had never seen it. When Harry walked in, he immediately noticed the Gryffindor memorabilia as well as muggle posters of Motorcycles and ‘bikini clad’ women. Harry had a feeling that all this was done and arranged to specifically enrage Sirius’ parents. Harry also noticed pictures of his father standing arm in arm with Sirius Black, Remus Lupin and Peter Pettigrew all when they were still in school. When Harry tried to remove the picture from the wall, he realised that Sirius really wasn’t taking any chances that his parents would redecorate without his permission and used an extra strong sticking charm. Harry noticed papers scattered on the carpet and bent to look. That’s when he found the letter;
Thank you, thank you, for Harry’s birthday present! It was his favourite by far. One year old and already zooming along on a toy broom stick, he looked so pleased with himself, I’m enclosing a picture so you can see. You know it only rises two feet off the ground, but he nearly killed the cat and he smashed a horrible vase the Petunia sent me for Christmas (no complaints there). Of course, James thought it was so funny, says he’s going to be a great Quidditch player, but we’ve had to pack away all the ornaments and make sure we don’t take our eyes off him when he gets going.
We had a very quiet birthday tea, just us and old Bathilda, who has always been sweet to us and who dotes on Harry. We are so sorry you couldn’t come, but the Order’s got to come first and Harry’s not old enough to know it’s his birthday anyway! James is getting a bit frustrated shut up here, he tries not to show it but I can tell- also, Dumbledore’s still got his Invisibility Cloak, so no chance of little excursions. If you could visit, it would cheer him up so much. Wormy was here last weekend, I though he seemed down, but that was probably the news about the McKinnon’s; I cried all evening when I heard.
Bathilda drops by most days, she’s a fascinating old thing with the most amazing stories about Dumbledore. I’m not sure he would be pleased if he knew! I don’t know how much to believe, actually, because it seems incredible that Dumbledore
After realizing that it was from his mum, Harry tried to find the rest of the letter but couldn’t find it. What he did find was the picture that Lily talked about in the letter. Harry pocketed it and continued to try and find the rest of the letter. After a while, Harry heard Hermione calling out to him and walked out to the landing, which is where he saw the sign;
Do Not Enter Without the Express Permission of Regulus Arcturus Black
This was when he found out what R.A.B stood for. He called out to Hermione and Ron to come and join him and showed them what he had found. When they walked into the room, they saw that it was the complete opposite to Sirius’. Whereas Sirius pushed to show his difference to his family, Regulus pushed to show that he supported his family completely. The Slytherin colours were everywhere throughout the room as well as the Black family crest and motto painted above the bed. Laying on the bed was a stack of yellowed newspaper clippings that were all about Voldemort. While looking throughout the room Harry found a picture that showed that Regulus played Seeker. Hermione tried to summon the locket and when this failed, they started to manually look through Regulus’ room. After a while, they started to think where else that it could be in the house. This is when Hermione realized she had seen it when they were staying there through the summer and cleaning Grimmauld Place before the start of 5th year (OP6)