Arsinoe (Fayoum land in the past)

In the Ptolemaic period Ptolemy II named “Philadelphus” the region and his capital after the name of his wife Arsinoe II, so the region was called “Arsenoits” and the city “Arsinoe” and continued to use that name until the Arab takeover of Egypt (642) and the region was known as “Fayoum” and its capital “Fayoum City”