Gilderoy Is A Boys Name Of Irish Origin. It Will Likely Come As No Surprise That A Darling Name Like This That Means "son Of The Red-head" Comes From Ireland. But What You Might Not Have Considered Was The Connection To The Harry Potter Series This Name Would Give Baby. A Trickster Wizard To Look To And An Inadvertent Connection To Kenneth Branagh? There Are Certainly Much Worse Choices!