Within two years of the defeat and surrender of Licinius, Constantine had not only put his brother-in-law and former co-"augustus" to death, but also executed his nephew Licinius II, the son of his sister Flavia Julia Constantia. According to the Latin histories of Ammianus Marcellinus and Aurelius Victor, after a trial whose real circumstances are mysterious, Constantine executed Crispus at Pola (Pula) in 326. Fausta, whose son Constantius II became "caesar" in November 324, was also put to death, and the Late Greek historian Zosimus and the Byzantine Greek writer Joannes Zonaras wrote that Constantine had accused Crispus of incest with his stepmother. After his death, Crispus was subjected to "damnatio memoriae".