Richie is a diminutive of the given name Richard, which means "brave power". It is derived from the Germanic elements ric "power, rule" and hard "brave, hardy" (Behind the Name).
Coote is a surname of early medieval English origin, and derives from the Middle English co(a)te meaning "a coot", and was originally given as a nickname to a bald person (Internet Surname Database).
Lexicon list of Beaters
From the Web
Harry Potter Wiki: Richie Coote