John bar Penkaye
John or Iohannan bar Penkaye was an East Syriac (Nestorian) writer of the late 7th century. His surname indicates that his parents came from Fenek, on the Tigris (east of Tur Abdin). He was a monk at the monastery of Mar John of Kamul, and later at the monastery of Mar Bassima. Later writers confuse him with John Saba (John of Dalyatha).  llll 
A number of his works have come down to us. Most of them have never been published and are extant only in manuscripts.
- Addai Scher, Notice sur la vie et les oeuvres de Yohannan bar Penkaye, Journal Asiatique, ser. 10. vol. 10 (1907), p.161-178. Available online from http://gallica.bnf.fr (search for Journal Asiatique).
- A History of Christian Thought, Paul Tillich, Touchstone Books, 1972. ISBN 0-671-21426-8 (p. 43)
- S. Brock, A brief outline of Syriac Literature, Moran Etho 9, Kottayam, Kerala: SEERI (1997), pp.56-57