Mehetabel was the daughter of Matred and the wife of Hadad (or sometimes translated as "Hadar") who became the last of the Kings of Edom.
Mehetabel is mentioned by name twice in the Bible, in Genesis 36:39 and 1 Chronicles 1:50.
There also is a male with the name of Mehetabel, in Nehemiah 6:10-13.
The name Mehetabel means "Whom God makes happy" or "benefited of God."
Next person in the Bible: Melchizedek