My Singer Quantum XL3400 is Vesta, just because I like the name
My Bernina 1530 is Martha, named for friends deceased Mom who was the previous owner
My Singer 401A is Elsie, named for friends deceased Mom who was the previous owner
My Singer 301A is Helen, named after my sweet Nana
My Singer 15-91 is Ethel, named after my Mom's Mom who I never knew
I have a Singer Spartan and a Singer 99 but I can't remember their names
My Juki Serger MO644D is Bronwyn, because I like the name
I'm keeping a White Model 808 for DD. DD inherited it from her Dad's Mom and her name is North Carolina, just like previous owner.

Let me know when you see the theme. :P

First came Betty - the 1913 Model 27 treadle. She just seemed like a Betty.
Next, the 1950 FW, I figured she'd be Betty's friend, but sometimes rival for my attention, so her name is Veronica, Ronnie for short.
Midge was next, she's the 1950 FW that I recently sold.
Moose, the 1936 15-91, who will push through almost anything...
Archie was next, he was a thrift store find, the 1958(?) 403A. He was supposed to be my main machine. I ended up selling him when I got the 401A and the 503J. I figured there were too many of the one type, and I can't use them all, I don't actually sew all that much, in fact.
Alice was next. She's the 1889 VS2. Predecessor to the Model 27,... naturally, she should be Mrs Cooper, Betty's mom....
After that I fell off naming them for a bit, but the 1950 99K was named Jelly Bean.

The question I have is, can you reuse names? :o Archie and Midge are gone but not forgotten, but different machines have assumed their roles...