FitzSimons Surname: Origin, Meaning & Coat of Arms

Some records give Fitzsimmons; others give FitzSimons. Both point to the same Irish family name. Its meaning, shared with Fitzsimmons, is “Son of Simon”.

• The 2010 census count for FitzSimons in the United States was 1,855, good for rank 15,719.
• FitzSimons drops the “m” of Fitzsimmons, a shortening that clerks often made.
• Regional accents shaped spellings long before dictionaries fixed them.

Family crest and blazon

Arms linked to Fitzsimmons and its spellings were granted to individual families; our heraldry team traces which line they belonged to. Research your FitzSimons family history with a full surname report and painted coat of arms.