When we got Star, I suggested my husband and son and I each pick out a name for her registered name. We ended up with "Blue Moon Star" - and now that we've been loving her for many years, we realize that she is truly a "Once in Blue Moon" dog - and she's always the Star!
"Sherman" was already named when we got him- His registered name is "Destiny's Raise the Bar".....(?!!), but Sherman (Shermie) fits him much better.
I had named our sweet RB dog "Rosie" because she just looked like a Rosie. That name multiplied into many nicknames - Rosie-Posiey, Rosie-velt, Rosie-Bean, Rosey-Rita (after my Mom), and many more! Since she's gone, it's been fun to recall all the silly names I made up for her, she was such a sweet, funny dog.