People sometimes just took names they liked.
A neighbor told me that her husbands Grandmother was the maid in a Jewish house and
got pregnant had to leave and took the name of the family with her.
I looked in the phone book needing a lawyer and found one with my maiden name
which was Ebenstein. She told me that her grandfather had lived with a family
in Europe and adopted the name.
I remember that my Father told me that the family always had a boarder.