Betsy

Betsy is an English pet form of Elizabeth, which derives from the Hebrew name Elisheba, meaning something along the lines of my God is an oath or my God is abundance. It emerged as an affectionate diminutive in the eighteenth century and became widely popular in Britain and North America, often associated with Betsy Ross, the American seamstress traditionally credited with sewing the first United States flag. The name belongs to a large family of Elizabeth derivatives that includes Betty, Beth, Bess, Bessie, and Eliza.