Betty

Betty 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. The name has been in common use as an independent given name since at least the 18th century and enjoyed particular popularity in the United States during the early to mid 20th century. Notable bearers include Betty Ford, First Lady of the United States, and Betty Davis, the American actress. Closely related forms include Beth, Bette, Bess, Bessie, and Eliza.