HydeEnglish From Middle English hide, a unit of land, approximately the size necessary to support a household.
JekyllEnglish Derived from the Breton given name Judicaël. This name was used by Robert Louis Stevenson for the character of Dr Henry Jekyll in the book Strange Case of Dr Jekyll and Mr Hyde (1886).
SimpsonEnglish Means "son of Sim", Sim being a medieval short form of Simon 1. This is the name of a fictional American family on the animated television series The Simpsons, starting 1989.