Cosmas Indicopleustes
Cosmas Indicopleustes (Koine Greek: Κοσμᾶς Ἰνδικοπλεύστης, lit. 'Cosmas who sailed to India'; also known as Cosmas the Monk) was a merchant and later hermit from Alexandria in Egypt. He was a 6th-century traveller who made several voyages to the Kingdom of Aksum, and India during the reign of emperor Justinian. His work Christian Topography contained some of the earliest and most famous world maps. Cosmas was a pupil of the East Syriac Patriarch Aba I and was himself a follower of the Church of the East.