Son of Andrew; manly or brave
Andersyn is a modern American feminine adaptation of the Scandinavian surname Anders, which is a derivative of Andrew. While the suffix '-son' traditionally denotes male lineage, the '-syn' spelling is a contemporary stylistic choice used to feminize the name. It ultimately traces back to the Greek word 'andreios', meaning courageous or masculine.
US births per 5-year period, 1990–present (SSA data).