Who was Jutta of Saxony's father-in-law?
Eric IV of Denmark Eric IV, also known as Eric Ploughpenny or Eric Plowpenny (Danish: "Erik Plovpenning" ), (  1216 – 10 August 1250) was king of Denmark from 1241 until his death in 1250. He was the son of King Valdemar II by his wife, Berengaria of Portugal, and brother of King Abel and King Christopher I.
Juw Dekama Juw Dekema (1449/50 – October 24, 1523) was a Frisian chieftain and Schieringer in Weidum and Baard, who was elected as potestate of Friesland in 1494 at the diet of Sneek. In 1498 he asked Albrecht of Saxony to rule the land. Juw served as a councilor at the Court of Friesland (1500–1515) and magistrate of Baarderadeel (1510–1512).