Hmmm I've only adopted a few and none had names. Mitten (my first cat) - I'm sure he had a name but he was a stray so we don't know. The other two I adopted from the shelter were kittens and had no names; so I got to name them Raggy Ann (brown patched tabby) and Reds (red mctabby/white). The rest were either cats we kept from the barn and named them or pedigree ones we got to name.
Now our lab - she's had 3-4 names (original name, shelter name, 2nd owner name, and her present name). She was named Grace by the shelter, Angel by the 2nd owner, and Keno by us
Now our lab - she's had 3-4 names (original name, shelter name, 2nd owner name, and her present name). She was named Grace by the shelter, Angel by the 2nd owner, and Keno by us