Quoted from WikiPedia Personal
Everett was born in Norfolk, England to Major Anthony Michael Everett and Sara Maclean, who was Scottish, and descended from the baronets Vyvyan of Trelowarren and the German Schmiedern barons. He has an older brother, Simon Anthony Cunningham Everett (b. 1956). He's also a grand-nephew of Donald Maclean, the (in)famous spy, with whom he shares a striking resemblence. They are also both bisexual.