Curly-haired
A rare variant of the Irish surname Cassidy, derived from the Gaelic 'O Caiside'. It historically refers to the descendants of Caiside, a name meaning 'curly-headed'.
Less common today
Casady isn't in the latest US Top 1000. It last peaked at #7,997 in 1996.
US births per 5-year period, 1990βpresent (SSA data).