Unas had at least two queens, Nebet and Khenut, who were buried in a large double mastaba adjacent to their husband's pyramid. Unas and Nebet possibly had a son, the "king's son", "royal chamberlain", "priest of Maat" and "overseer of Upper Egypt" Unas-Ankh, who died about 10 years into Unas' reign. The filiation of Unas-Ankh is indirectly hinted at by his name and titles and by the presence of his tomb near those of Nebet and Unas but is not universally accepted. Two other sons have been proposed, Nebkauhor and Shepsespuptah, but these filiations are conjectural and contested. Unas likely died without a male heir.