Question: What year was the mother of John Albert Vasa born?

Context paragraphs:
Duke John Albert of Mecklenburg: Duke John Albert of Mecklenburg (German: "Herzog Johann Albrecht zu Mecklenburg" ; given names "John Albert Ernest Constantine Frederick Henry"; 8 December 1857 – 16 February 1920) was a member of the House of Mecklenburg-Schwerin who served as the regent of two states of the German Empire.  Firstly from 1897 to 1901 he was regent of Grand Duchy of Mecklenburg-Schwerin for his nephew Frederick Francis IV, Grand Duke of Mecklenburg, and from 1907 to 1913 he was Regent of the Duchy of Brunswick.

John Albert II, Duke of Mecklenburg: John Albert II, Duke of Mecklenburg[-Güstrow] (5 May 1590 in Waren – 23 April 1636 in Güstrow) was a Duke of Mecklenburg.  From 1608 to 1611, he was the nominal ruler of Mecklenburg-Schwerin; the actual ruler being the regent, his great-uncle Charles I.  From 1611 to 1621 John Albert and his brother Adolf Frederick I jointly ruled the whole Duchy of Mecklenburg.  From 1621, John Albert ruled Mecklenburg-Güstrow alone.

John Albert (ice hockey): John Albert (born January 19, 1989) is an American professional ice hockey forward.  He is currently playing for the Hershey Bears in the American Hockey League (AHL) while under contract to the Washington Capitals of the National Hockey League (NHL).  He was selected by the Atlanta Thrashers in the 6th round (175th overall) of the 2007 NHL Entry Draft and has formerly played with the Winnipeg Jets.  Albert was born in Cleveland, Ohio, but grew up in Concord Township, Lake County, Ohio.

John Albert I, Duke of Mecklenburg: John Albert I, Duke of Mecklenburg, in older literature known as "John" or" Johann" (23 December 1525 in Güstrow – 12 February 1576 in Schwerin), was the reigning Duke of Mecklenburg-Güstrow from 1547 to 1556 and of Mecklenburg-Schwerin from 1556 to 1576.  In 1549 John Albert I saw to it that the parliament of Mecklenburg carried through the Reformation for the entire Duchy.

John A. Carroll: John Albert Carroll (July 30, 1901 – August 31, 1983) was a Democratic United States Representative and United States Senator from Colorado.  Born in Denver, he attended the public schools, and during the First World War served in the United States Army (1918–1919).  He graduated from Westminster Law School in Denver in 1929, and was admitted to the bar the same year and commenced practice in Denver.  In 1933 and 1934, he was assistant United States attorney, and was district attorney of Denver from 1937 to 1941.  He was regional attorney for the Office of Price Administration in 1942 and 1943, and served in the Second World War as a commissioned officer in the U.S. Army from 1943 to 1945.  He resumed the practice of law, and was elected as a Democratic representative to the Eightieth and Eighty-first Congresses (January 3, 1947 to January 3, 1951).

Neamț Monastery: The Neamț Monastery (Romanian: "Mănăstirea Neamț" ) is a Romanian Orthodox religious settlement, one of the oldest and most important of its kind in Romania.  It was built in the 15th century, and it is an example of medieval Moldavian architecture.  A jewel of 15th-century architecture, the church was built during Ştefan cel Mare's reign and finished in the year when the Moldavian army won the battle against King John Albert (1497).

High School No. 1, Bydgoszcz: High School n°1 in Bydgoszcz dates back from the reign of the House of Vasa with John II Casimir Vasa.  It is a continuation of a Polish School established by Jesuits in 1619.  In 1623, college students welcomed king Sigismund III at the city's gate and in the school's hall during his stop in Bydgoszcz on his way to Gdańsk.  In 1637, an old adjoining tenement market was purchased, to be refiited for educational purposes.  Two years later, after the reconstruction and adaptation of the building, took place the inauguration ceremony of the school year.  Lastly, in 1695 the construction of a new school magnificent building.  At the time, the school had an impressive library.

Constance of Austria: Constance of Austria (German: "Konstanza" ; Polish: "Konstancja" ; 24 December 1588 – 10 July 1631) was queen of Poland as the second wife of King Sigismund III Vasa and the mother of King John II Casimir.

John Chapman (football manager): John Albert Chapman (14 March 1882 – 31 December 1948) was a Scottish football player and manager.  Born in New Monkland, Lanarkshire, he began his playing career with Rangers in 1904.  A year later, he moved to Albion Rovers, before another transfer in 1906 to Dumbarton, where he scored three goals in nine appearances.

John Albert Vasa: John Albert Vasa ("Jan Albert Waza") (25 June 1612 – 29 December 1634) was a Polish cardinal, and a Prince-Bishop of Warmia and Kraków.  He was the son of Swedish and Polish King Sigismund III Vasa and Austrian archduchess Constance of Austria.

Supporting paragraphs: John Albert Vasa Constance of Austria
Answer: 1588