Well, when I named Chester, the name just fit him better than any I thought of, I didn't realize it was a common pet name until the vets office said they have a lot of cats and dogs with that name.

Amy's was one that fit her cuteness, sweetness and personality... we had a session where we just threw out names and "yes" or "no'ed" them. When the name Amy was put out, everyone said "YES!"....

Giz, I didn't name, she had her name when they gave her to me.. I don't like the name but it FITS!! I call her "Dizzy Gizzy" sometimes..

Samantha, well, I didn't realize that was a common name either when I selected that one for her. I wanted to name her as a rememberance of my RB blackie Sambo and needed a female name, Samantha fit and stuck.

I don't reuse names, preferring each to have their own name, special just to them.