Commentary for Genesis 36:41

אלוף אהליבמה. This Oholivamah was a male. This is so in spite of the fact that his name ends with the letter ה suggesting that the person mentioned was a female. The same name occurs elsewhere for females in this very chapter (verse 5). Other males whose names conclude with the letter ה are שמלה, מסרקה in verse 36. Timna was a concubine of Eliphaz, although the name of one of the Alufim of Esau was also Timna. (verse 40)