Esau in the Old Testament is depicted as marrying multiple wives.
Genesis 28:6–9, Old Testament, The Church of Jesus Christ of Latter Day Saints, accessed April 27, 2023
6 When Esau saw that Isaac had blessed Jacob, and sent him away to Padan-aram, to take him a wife from thence; and that as he blessed him he gave him a charge, saying, Thou shalt not take a wife of the daughters of Canaan;
7 And that Jacob obeyed his father and his mother, and was gone to Padan-aram;
8 And Esau seeing that the daughters of Canaan pleased not Isaac his father;
9 Then went Esau unto Ishmael, and took unto the wives which he had Mahalath the daughter of Ishmael Abraham’s son, the sister of Nebajoth, to be his wife.