I know a couple of Kelseys and a
Cassidy. They are surnames which immediately are a turn off to me. Also,
Cassidy makes me think of Butch
Cassidy & Hop-A-Long
Cassidy, so there is that cowboy connotation;
David &
Shawn Cassidy, so there is a tacky 70s connotation; and Mama
Cass, a great singer but I can only think of a large woman when I think of
Cass. So it's definetly not a name I'd choose.