a Frisian nobleman who fought to free Friesland from foreign rule. He was born in 1482 into a Vetkoper 'hoofdelingen' or 'untitled noble' family near Oldeboorn, Friesland. He was the son of the chieftain Douwe Douwama and his wife Riem Eesckes. Jancko was married to Teth Luersma. Jancko Douwama is considered a hero of Frisian nationalism. Jancko Douwama lived in much troubled times during the final stages of a civil war in Friesland between the monastical factions called the Vetkopers and Schieringers.
