Cassidy (surname)

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Cassidy (Irish: Ó Caiside / Ó Casaide) is a common Irish surname and is sometimes used as a given name. The surname translates to "descendent of Caiside". Variations include: Cassady, Cassiday, Cassedy and Cassedey. The family was originally a Munster sept called Uí Chaisín[1] but in the 12th century a branch moved to Devenish Island in County Fermanagh,[1] where they became a medical and poetic family, hereditary physicians to the Maguires.

Cassidy may refer to the following:



See also[edit]


  1. ^ a b "The transmission of the cult of St. Maedhog", by Charles Doherty in Ireland and Europe in the Early Middle Ages: Texts and Transmission, Chathain, Proinseas Ni and Michael Richter, eds. Dublin: Four Courts Press, 2002