Betsy

Betsy is an English diminutive of Elizabeth, which itself derives from the Hebrew name Elisheba, meaning something along the lines of my God is an oath or my God is abundance. The name gained widespread use in Britain and America during the 18th and 19th centuries, becoming a familiar, affectionate form independent enough to be given as a standalone name. It is perhaps most famously associated in American culture with Betsy Ross, the seamstress traditionally credited with sewing the first United States flag. Related forms include Beth, Bess, Bessie, Betty, and Eliza.