Christoffel of Frisia 8 Oct 1536 - 13 Sep 1566 (1536–1566) Parents Enno II, Count of East Frisia Anna of Oldenburg Children Catharina Cirkensa Siblings Johan II of East Frisia Edzard II, Count of East Frisia Hedwig von Ostfriesland Elisabeth Gräfin von Ostfriesland Anna von Ostfriesland