Summary

The surname Cassidy is of Irish origin and is derived from the Gaelic name O Caiside, meaning 'descendant of Caiside'. It is believed to have originated from County Fermanagh in Ulster, Ireland. The Cassidy clan has a rich history and is associated with the ancient kingdom of Ulaid. They were known for their skill in warfare and their loyalty to their chieftains.
There are
26590
Cassidys in the USA
Cassidy is the
1325th
most common last name in the USA

Historical figures and celebrities called Cassidy

JohnCassidy

John Cassidy is an American economist and writer known for his works on inequality and economic policy.

EvaCassidy

Eva Cassidy was an American singer and guitarist known for her interpretations of various genres, including jazz, folk, and blues.

DavidCassidy

David Cassidy was an American actor, singer, and songwriter, best known for his role as Keith Partridge in the television series 'The Partridge Family' and his successful music career.

TedCassidy

Ted Cassidy was an American actor and voice artist, best known for his role as Lurch in the television series 'The Addams Family.'

ButchCassidy

Butch Cassidy, also known as Robert Leroy Parker, was an American train and bank robber, and leader of the Wild Bunch gang.

KatieCassidy

Katie Cassidy is an American actress and singer, best known for her role as Laurel Lance/Black Canary in the television series 'Arrow' and its spin-offs.

ShaunCassidy

Shaun Cassidy is an American actor, singer, writer, and producer, known for his role as Joe Hardy in the television series 'The Hardy Boys Mysteries' and his successful music career.

JoannaCassidy

Joanna Cassidy is an American actress known for her roles in films such as 'Blade Runner' and television series such as 'Six Feet Under.'

PatrickCassidy

Patrick Cassidy is an American actor, singer, and composer known for his work in musical theatre, including the role of Joseph in 'Joseph and the Amazing Technicolor Dreamcoat.'

JackCassidy

Jack Cassidy was an American actor and singer known for his performances on Broadway and his appearances in television shows such as 'The Partridge Family.'

Cassidy Genealogy

OriginsThe name 'Cassidy' is of Irish origin. It is derived from the Gaelic surname 'Ó Caiside,' meaning 'descendant of Caiside.' The personal name 'Caiside' is believed to be derived from the word 'cas,' meaning 'curly-haired.'
Geographic DistributionThe name 'Cassidy' is most common in Ireland, particularly in the counties of Donegal, Cavan, and Monaghan. It is also found in other English-speaking countries, including the United States, Canada, and Australia.
VariationsVariations of the name 'Cassidy' include 'Cassady,' 'Casidy,' 'Caiside,' 'Cassiday,' 'Cassydy,' 'Cassadie,' 'Cussity,' 'Cusody,' 'Cassedy,' and 'Cassidie.'
Migration and ImmigrationMany people with the surname 'Cassidy' emigrated from Ireland to other countries, particularly during times of famine and economic hardship. They settled in various parts of the United States, Canada, and Australia.