Johan I of East Frisia
Johan I of East Frisia was a member of the house of Cirksena and a non-reigning Count of East Frisia and later imperial governor of Limburg. Wikipedia
Born: 1506
Died: 1572 (age 66 years)
Grandchild: Gräfin Luise von Ostfriesland
Parents: Edzard I, Count of East Frisia