Library Eusebius of Caesarea Preparation for the Gospel
Book 9, Chapter 23
'He was also the inventor of measures, and for these things he was greatly beloved by the Egyptians. He married Aseneth a daughter of the priest of Heliopolis, by whom he begat sons. And afterwards his father and his brethren came to him, bringing much substance, and were set to dwell in Heliopolis and Sais, and the Syrians multiplied in Egypt.
'These he says built both the temple in Athos and that in Ileliopolis, and were called Ermiuth. Soon afterwards Joseph died, as did also the king of Egypt. So Joseph while governor of Egypt stored up the corn of the seven years, which had been immensely productive, and became master of Egypt.'
English translation by E. H. Gifford, Eusebii Pamphili Evangelicae Praeparationis Libri XV (Oxford, 1903). Public domain. Digital text via Roger Pearse / tertullian.org.