The meaning of the name Fitzwilliam is Son Of William. The origin of the name Fitzwilliam is English. This is the culture in which the name originated, or in the case of a word, the language.
Fitzwilliam Darcy, character in the novel "Pride & Prejudice" by Jane Austen.
Fitzwilliam is on 81 BN name lists Fitzwilliam is currently not ranked on the BN charts Fitzwilliam is currently not ranked in U.S. births
Fitzwilliam 
