We got Star at 5 weeks old, we named her Blue Moon Star.
My RB Rosie was originally Elsa at the shelter. Pretty, but I liked Rosie better and it fit her personality.
Sherman was Sherman from the breeder, and he's such a Sherman. It's perfect for him. The breeder named him Destiny's Raise the Bar and they called him BarBoy till they settled on Sherman for a call name.
Speedo (remember him?) was first named Cloud. I called him Prince for a while, then my husband picked Speedo. It fit his outgoing personality. Not sure if his new family renamed him.