From the Hebrew name לֵאָה (Le'ah) which was probably derived from the Hebrew word לְאָה (le'ah) meaning "weary". Alternatively it might be related to Akkadian littu meaning "cow". In the Old Testament Leah is the first wife of Jacob and the mother of seven of his children.
Etymology & Historical Origin - Leigha. Leigha is a modern American form of Leah. Leah is a Hebrew name borne from the Bible as Jacob's first wife. She is also remembered as the older sister of Rachel (Genesis 29:1-30). The name means “languid, relaxed, weary”.