According to some scholars, such as J.P. Allen, Ankhkheperure Smenkhkare ruled together with Meritaten, but in the year following Akhenaten's death, Smenkhkare died. The theory is, that Meritaten was the 'king's daughter' Akenkeres who is recorded in Manetho's Epitome to have assumed the throne next, in her own right as king and bearing the name Neferneferuaten. Neferneferuaten is assigned a reign of two years and one month and is placed in Manetho's account as the immediate predecessor of the king, "Rathothis", who is believed to be Tutankhamun, her half-brother by another, unnamed wife of Akhenaten.