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.
Paul Luther Paul Luther (28 January 1533 – 8 March 1593) was a German physician, medical chemist, and alchemist. He was the third son of the Protestant reformer Martin Luther and was successively physician to John Frederick II, Duke of Saxony; Joachim II Hector, Elector of Brandenburg; Augustus, Elector of Saxony and his successor Christian I. He taught alchemy to Anne of Denmark.