With the decadence of Seljuks in the last quarter of the 13th century, local feudal lords had founded several principalities on the Anatolian territory. The Beylik of Saruhan, founded around Manisa, captured the site of Menemen together with Foça and its surroundings in 1313. At the moment of the Turkish conquest, Menemen didn't exist as a town: it was only the center of the domanial complex the aristocratic Byzantine family of Tarchaneiotes possessed in the area. But it seems that under the Saruhanoglu its emergence as a locality was relatively fast. As a reminder of its origin, this new locality was called Tarhaniyat, and this alternative name survived for a long time, as the Ottoman documentation shows, in particular census registers.