What is "fitzgilbert"

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 Fitzgilbert include:

• Baldwin FitzGilbert (died 1090), a Norman nobleman
• Richard Fitz Gilbert(1030 - 1090), a Norman lord who participated in the Norman Conquest
• Walter fitz Gilbert of Cadzow (d. c. 1346), a Scottish nobleman
• William FitzGilbert , fifteenth Lord Chancellor of England