If you look at aunts and uncles you can be named after them. My great grandmother was Betsy Meffan Thomson Finlayson named after her uncle's wife whose maiden name was Betsy Meffan Thomson her mother having been Betsy Meffan. Sometimes its after an auntie or uncle who are just close friends of the family and no actual blood relation. Or if you are really unfortunate from 1920s on you can be named after the popular filmstar of the day.
