By the early 10th century, the quarter that grew around the monastery had become known as "Kosmidion"; alternatively, but less likely, Kosmidion and ta Paoulines may have been neighbouring but separate localities. In 924, Emperor Romanos I Lekapenos (r. 920–944) met with the Bulgarian Tsar Simeon at a pier in Kosmidion during the Byzantine–Bulgarian war of 913–927. Theophylact Lekapenos, Romanos' son and Patriarch of Constantinople in 933–956, had his stables there.