Elsie

Elsie originated as a Scottish pet form of Elspeth, itself the Scottish variant of Elisabeth, which derives from the Hebrew name Elisheba, meaning my God is an oath or my God is abundance. The name gained wider popularity across England and Scandinavia as an independent given name during the nineteenth century, boosted in part by its warm, informal sound. It is closely related to Elsa, Elspeth, and Elisabeth, all sharing the same Hebrew root.