The earliest recorded mention of Kuwait was in 150 AD in the geographical treatise ''Geography'' by Greek scholar Ptolemy. Ptolemy mentioned the Bay of Kuwait as ''Hieros Kolpos'' (''Sacer Sinus'' in the Latin versions). Christian Nestorian settlements flourished in Akkaz and Failaka from the 5th century until the 9th century. Excavations have revealed several farms, villages and two large churches dating from the 5th and 6th century. Archaeologists are currently excavating nearby sites to understand the extent of the settlements that flourished in the eighth and ninth centuries A.D. An old island tradition is that a community grew up around a Christian mystic and hermit. The small farms and villages were eventually abandoned. Remains of Byzantine era Nestorian churches were found at Al-Qusur in Failaka. Pottery at the site can be dated from as early as the first half of the 7th century through the 9th century.