My cats are named Quigley, Thomas Gregory,Spot, Benjamin, and Clare. I named all but two. I tend to let the cat be in the house at least a few days, sometimes as long as two weeks, so I can see what their purrsonality is like, and that way I can usually pick a name that suites them. As most of the cats I have lived with came to me as kittens, I have not had any that were already named. As far as common names, Morris, Tiger and any that are color associated, like Snowball for a white cat, or Ebony for a black cat.......