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 include:
Baldwin FitzGilbert (died 1086-1091), Norman nobleman John Fitz Gilbert or John Marshal (Marshal of England) (c. 1105–1165), minor Anglo-Norman nobleman Richard fitz Gilbert (before 1035–c. 1090), Norman lord who participated in the Norman conquest of England Walter fitz Gilbert of Cadzow (died c. 1346), Scottish nobleman William FitzGilbert, fifteenth Lord Chancellor of England, from 1141 to 1142 William de Lancaster I (died c. 1170), English nobleman also known as William Fitz Gilbert
References
See also Richard Fitz Gilbert de Clare (died 1136), Anglo-Norman nobleman Fitz Gilbert (given name)