O'Cronin: Last Name Origin and Family Crest

Bearers of the name O'Cronin share their surname's story with Cronin, its better-known spelling. The name is usually explained as “Descendant of the swarthy one”.

Spelling and variants

The O' in front of the name is a particle that was often added to Cronin on registers. Related forms: Cronan and Croneen.

Family crest and blazon

Arms linked to Cronin and its spellings were granted to individual families; our heraldry team traces which line they belonged to.

For the full story, order the O'Cronin surname pack.