Meaning & Origin
A surname originating as a patronymic.
Fitzwilliam is a boy's baby name of Old French and Germanic origin, an aristocratic compound of Fitz- (from the Norman French for 'son of') and William (from the Germanic meaning 'resolute protector'). It was historically a surname of the English nobility.
Known to literary fans as the full name of Mr. Darcy in Jane Austen's Pride and Prejudice — Fitzwilliam Darcy — this name carries an unassailable air of English aristocracy and romantic literary heritage.