"I have had no choice but to terminate his contract."
-- Cormack McLeod (DP3)
Cormack McLeod was the manager of the Montrose Magpies quidditch team (c. 1990s).
McLeod tried to defend his Chaser, Alasdair Maddock, after he kicked the Snitch towards the Keeper, resulting in a loss to the Kenmare Kestrels. He threatened to turn Maddock into a jellyfish should anything of the sort happen again (DP2, Pm).
Cormack, a variation of Cormac, comes from Irish Gaelic corb ("raven" or "wheel") and mac ("son"). It was also the name of a third century king of Ireland (Behind the Name).
The Scottish surname McLeod means "son of Leod" and derives from the Norse name Ljotr (ljot-ulf "ugly wolf") (Internet Surname Database).
From the Web
Pottermore feature: British and Irish Quidditch teams to support