Johanna Maria van der Gheynst
Johanna Maria van der Gheynst( also called" Jeanne Marie van der GheynstJohanna Maria van der Gheenst";- 15 December 1541) was in 1521- 1522, for a short time, the mistress of the Emperor Charles V and bore him a daughter, Margaret of Parma, who was Governor of the Netherlands from 1559 to 1567 and from 1580 to 1583.
Jacoba Maria van Nickelen
Jacoba Maria van Nickelen( 1690, Haarlem – 1749, Amsterdam), was an 18th- century flower painter from the Northern Netherlands.
Jan van Angeren
Johannes Regnerus Maria van Angeren( 9 May 1894 – 19 March 1959) was Dutch politician.
He was born in Utrecht and died in The Hague.
Hugo Grotius
Hugo Grotius (10 April 1583 – 28 August 1645), also known as Huig de Groot  or Hugo de Groot , was a Dutch humanist, diplomat, lawyer, theologian and jurist.
A teenage intellectual prodigy, he was born in Delft and studied at Leiden University.
He was imprisoned for his involvement in the intra-Calvinist disputes of the Dutch Republic, but escaped hidden in a chest of books.
Grotius wrote most of his major works in exile in France.
Hugo Grotius was a major figure in the fields of philosophy, political theory and law during the sixteenth and seventeenth century.
Along with the earlier works of Francisco de Vitoria and Alberico Gentili, he laid the foundations for international law, based on natural law in its Protestant side.
Two of his books have had a lasting impact in the field of international law: "De jure belli ac
pacisOn
the Law of War and Peace"] dedicated to Louis XIII of France and the "Mare LiberumThe Free Seas"].
Grotius has also contributed significantly to the evolution of the notion of "rights".
Before him, rights were above all perceived as attached to objects; after him, they are seen as belonging to persons, as the expression of an ability to act or as a means of realizing something.
It is thought that Hugo Grotius was not the first to formulate the international society doctrine, but he was one of the first to define expressly the idea of one society of states, governed not by force or warfare but by actual laws and mutual agreement to enforce those laws.
As Hedley Bull declared in 1990: "The idea of international society which Grotius propounded was given concrete expression in the Peace of Westphalia, and Grotius may be considered the intellectual father of this first general peace settlement of modern times.
" Additionally, his contributions to Arminian theology helped provide the seeds for later Arminian-based movements, such as Methodism and Pentecostalism; Grotius is acknowledged as a significant figure in the Arminian-Calvinist debate.
Because of his theological underpinning of free trade, he is also considered an "economic theologist".
Grotius is also a playwright, and poet.
His thinking returned to the forefront after the First World War.
Jeremias Van Rensselaer (sixth patroon)
Jeremias van Rensselaer( March 18, 1705 – 1745) was the eldest son of Kiliaen van Rensselaer and Maria van Cortlandt.
Hubertus van Megen
Hubertus Matheus Maria van Megen( born 4 October 1961) is a Dutch prelate of the Catholic Church who works in the diplomatic service of the Holy See.
Catharina Maria van der Klaauw
Catharina" Toos" Maria van der Klaauw( 4 December 1915 – 11 August 2011) was a Dutch fencer.
She competed in the women's individual foil event at the 1936 Summer Olympics.
Anna Maria van Geene
Anna Maria van Geene( 27 February 1928 – 14 October 1992) was a Dutch gymnast.
She competed in the women's artistic team all- around event at the 1948 Summer Olympics.
Maria Van Den Brand
Maria Van Den Brand( born 27 June 1924) is a Belgian former swimmer.
She competed in the women's 4 × 100 metre freestyle relay at the 1948 Summer Olympics.
Maria van Reigersberch
Maria van Reigersberch (Veere? or Boulogne-sur-Mer?, 7 October 1589? — The Hague, 19 April 1653) was the wife of Hugo Grotius, who helped him escape in 1621 from Loevestein Castle during his incarceration there after his 1619 trial.

Question: Where did Maria Van Reigersberch's husband study at?
Answer: Leiden University