Nyuserre Ini
Neferirkare and Khentkaus had at least another son, the future king Nyuserre Ini. In addition, since the relation between Shepseskare and Neferefre remains uncertain, it is possible that the two were brothers too, as suggested by the Egyptologist Silke Roth, although other hypotheses on the matter have been proposed: Verner sees Shepseskare as a son of Sahure and hence Neferefre's uncle, while Jaromír Krejčí believes Shepseskare was Neferefre's son.