He was the eldest son of Nicholas III, Lord of Werle-Güstrow and Agnes of Mecklenburg.
After his father's death in 1360 or 1361, he initially ruled Werle-Gustrow alone.
[citation needed] John died young, before 9 September 1378.
He was married to Matilda (died before 17 December 1402), the daughter of Nicholas IV, Lord of Werle-Goldberg.
This article about a member of the German nobility is a stub.