I have a 1951 15-91 Singer I named Fusi after my fairy quilt godmother. (I was working on it when I found the machine at a garage sale.
I have a 1980's Singer Fashion Mate I named Trackie because I bought this machine at a tractor show.
I named my Pfaff, Pfreda, just because.
I named my Viking Rose, Rosie. Really original huh?
I still have a 1972 Kenmore, and a Babylock serger that don't have names, but need work.
I have a 1930's Singer treadle without a name. :)