SYDNEY

SYDNEY. The founder of this family in England was Sir William Sydney, Chamberlain of King Henry II., who came from Anjou with that monarch, and was buried at Lewes Priory in 1188. Baronage. The name is said to be a corruption of St. Denis.

Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.