Bess

Bess is an English diminutive 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 was a widely used pet form in medieval and early modern England, most famously associated with Queen Elizabeth I of England, who was popularly known as Good Queen Bess. The name has long functioned as an independent given name in its own right, alongside related short forms such as Bette, Betty, Betsy, Bessie, and Eliza.