Joscelind Wadcock was a Chaser for the Puddlemere United Quidditch team (FW).
Born in 1911, and appearing on a Famous Wizard card, she has retired from playing professional Quidditch (FW).
Joscelind is likely to be a variant of Joceline or Jocelyn, which is derived German Gaut (the name of the Germanic tribe the Goths), combined with a Latin diminutive suffix (Behind the Name).
Wadcock may be a diminutive of the surname Wade (Oxford Dictionary of Family Names), which derives from Olde English wadan ("to go") or (ge)waed ("ford") (Internet Surname Database).
Lexicon list of Chasers
From the Web
Pottermore feature: Quidditch collection
Harry Potter Wiki: Joscelind Wadcock
Tags: athletes competitions/competitors famous match skills talented teams win