O'Cassidy Family Crest & Name History

There is no single O'Cassidy family crest for every bearer. Herald Lab researches the arms historically associated with the name and explains whose they were.

The meaning behind O'Cassidy

Not every O'Cassidy is related, but the name itself grew out of Cassidy. The family name meaning is “Descendant of Caiside ("curly-haired")”, the same as for Cassidy.

The O' in front of the name is a particle that was often added to Cassidy in records. The same family of names includes Cassiday and Cassady.

Research your O'Cassidy family history with a full surname report and painted coat of arms.