Elisheba, also spelled Elisheva (//;אֱלִישֶׁבַע in Hebrew) in the Hebrew Bible was the wife of Aaron the ancestor of the Jewish high priests. 
According to later Jewish tradition, she is buried in the Tomb of the Matriarchs in Tiberias.
She is a daughter of Amminadab, and a sister of Nahshon, from the Tribe of Judah (Exodus 6:23). 
Exodus 6:23 "And Aaron took him Elisheba, the daughter of Amminadab, the sister of Nahshon, to wife; and she bare him Nadab and Abihu, Eleazar and Ithamar." American Standard Version 1901
In Hebrew names, Eli means "my God" and Sheba means "oath", so Eli-sheba is oath of my God or "God is her oath" ("Sheva" is also the cardinal number seven in Hebrew.) 
The English name 'Elizabeth' is derived from Elisheba.