1) English boy name 
Fitzgilbert is a Norman French surname. It is patronymic, since the prefix Fitz- derives from the Latin filius, meaning `son of.` Its variants include the alternate forms FitzGilbert, Fitz Gilbert, Fitz-Gilbert, fitz Gilbert, and the given name turned surname Gilbert or Gilberts. Fitzgilbert is rare as a given name. People with the name Fitzgilb.....