According to the History of the Patriarchs by Severus, Bishop of Al-Ashmunyn (Heliopolis), John of Nikiû lived under the Patriarchs John III, Isaac, and Simeon.
Menurut History of the Patriarchs of Alexandria oleh Severus, Uskup Al-Ashmunyn (Heliopolis), Ywhna Nikiû hidup di masa Patriark Yohanes III, Ishak, dan Simeon.