John I of Cammin

Johann of Saxe-Lauenburg (c. 1318–1370) was the youngest son of Duke Eric I of Saxe-Lauenburg and Elisabeth of Pomerania. Destined for the church, he studied at Montpellier and held several benefices before Pope Clement VI appointed him bishop of Cammin in 1343.

He held a diocesan synod in 1352 and resisted Gniezno's claims in his exempt diocese. In 1356 a treaty with Bogislaw V placed the see under ducal protection. He died in 1370 and was buried in Cammin Cathedral.