Question: Information: - Eric XIV ( Swedish : Erik XIV ; 13 December 1533 -- 26 February 1577 ) was King of Sweden from 1560 until he was deposed in 1568 . Eric XIV was the eldest son of Gustav I ( 1496 -- 1560 ) and Catherine of Saxe - Lauenburg ( 1513 -- 35 ) . He was also ruler of Estonia , after its conquest by Sweden in 1561 . While he has been regarded as intelligent and artistically skilled , as well as politically ambitious , early in his reign he showed signs of mental instability , a condition that eventually led to insanity . Some scholars claim that his illness began early during his reign , while others believe that it first manifested with the Sture Murders . Eric , having been deposed and imprisoned , was most likely murdered . An examination of his remains in 1958 confirmed that he probably died of arsenic poisoning . - Catherine of Saxe-Lauenburg ("Katarina" in Swedish) (24 September 1513 23 September 1535) was the first consort of Gustav I of Sweden and Queen of Sweden from 1531 until her death in 1535. She was born in Ratzeburg to Magnus I, Duke of Saxe-Lauenburg and Catherine, daughter of Henry IV, Duke of Brunswick-Luneburg. - Gustav I, born Gustav Eriksson of the Vasa noble family and later known as Gustav Vasa (12 May 1496 29 September 1560), was King of Sweden from 1523 until his death in 1560, previously self-recognised Protector of the Realm ("Riksforestandare") from 1521, during the ongoing Swedish War of Liberation against King Christian II of Denmark, Norway and Sweden. Initially of low standing, Gustav rose to lead the rebel movement following the Stockholm Bloodbath, in which his father perished. Gustav's election as King on 6 June 1523 and his triumphant entry into Stockholm eleven days later meant the end of Medieval Sweden's elective monarchy and the Kalmar Union, and the birth of a hereditary monarchy under the House of Vasa and its successors, including the current House of Bernadotte. Given the information, choose the subject and object entities that have the relation of 'father'.
Answer:
eric xiv of sweden , gustav i of sweden