Prince Floris of Orange-Nassau, van Vollenhoven
Prince Floris Frederik Martijn of Orange- Nassau, van Vollenhoven( born 10 April 1975) is the fourth and youngest son of Princess Margriet of the Netherlands and Pieter van Vollenhoven.
Prince Floris has three older brothers: Prince Maurits, Prince Bernhard, Prince Pieter- Christiaan
Yuki Ozawa
He previously played in the Netherlands.
Juliana of the Netherlands
Juliana ; Juliana Louise Emma Marie Wilhelmina; (30 April 1909 – 20 March 2004) was Queen of the Netherlands from 1948 until her abdication in 1980.
Juliana was the only child of Queen Wilhelmina and Prince Henry of Mecklenburg-Schwerin.
She received a private education and studied international law at the University of Leiden.
In 1937, she married Prince Bernhard of Lippe-Biesterfeld with whom she had four children:
Beatrix, Irene, Margriet, and Christina.
During the German invasion of the Netherlands in the Second World War, the royal family was evacuated to the United Kingdom.
Juliana proceeded to relocate to Canada with her children, while Wilhelmina and Bernhard remained in Britain.
The royal family returned to the Netherlands after its liberation in 1945.
Due to Wilhelmina's failing health, Juliana took over royal duties briefly in 1947 and 1948.
In September 1948 Wilhelmina abdicated and Juliana ascended to the Dutch throne.
Her reign saw the decolonization and independence of the Dutch East Indies (now Indonesia) and Suriname.
Despite a series of controversies involving the royal family, Juliana remained a popular figure among the Dutch.
In April 1980, Juliana abdicated in favour of her eldest daughter Beatrix.
Upon her death in 2004 at the age of , she was the longest-lived former reigning monarch in the world.
Pieter van Vollenhoven
Pieter van Vollenhoven Jr.( born April 30, 1939) is the husband of Princess Margriet of the Netherlands and a member, by marriage, of the Dutch Royal House.
Prince Maurits of Orange-Nassau, van Vollenhoven
Prince Maurits Willem Pieter Hendrik of Orange- Nassau, van Vollenhoven( born 17 April 1968) is a member of the Dutch royal family as the eldest son of Princess Margriet of the Netherlands and Pieter van Vollenhoven.
Before the succession of his cousin Willem- Alexander as King, he was a member of the Dutch Royal House and tenth in the line of succession to the Dutch throne.
With Willem- Alexander's succession however, he is no longer a member of the Dutch Royal House, and is no longer in line to direct succession to the Dutch throne.
Princess Margriet of the Netherlands
Princess Margriet of the Netherlands (Margriet Francisca; born 19 January 1943) is the third daughter of Queen Juliana and Prince Bernhard.
As an aunt of the reigning monarch, King Willem-Alexander, she is a member of the Dutch Royal House and currently eighth and last in the line of succession to the throne.
Princess Margriet has often represented the monarch at official or semi-official events.
Some of these functions have taken her back to Canada, the country where she was born "de facto", and to events organised by the Dutch merchant navy of which she is a patron.
Prince Pieter-Christiaan of Orange-Nassau, van Vollenhoven
Prince Pieter-Christiaan Michiel of Orange-Nassau, van Vollenhoven (born 22 March 1972), is the third son of Princess Margriet of the Netherlands and Prof. Pieter van Vollenhoven.
Before the succession of his cousin Prince Willem-Alexander as King, he was a member of the Dutch Royal House and twelfth in line to the throne.
With Willem-Alexander's succession however, he is no longer a member of the Dutch Royal House, and is no longer in line to direct succession to the Dutch throne, but still retains his membership as a member of the Dutch Royal Family
Duke Henry of Mecklenburg-Schwerin
Duke Henry of Mecklenburg- Schwerin( 19 April 1876 – 3 July 1934) was prince consort of the Netherlands as the husband of Queen Wilhelmina of the Netherlands.
He was the longest- serving consort of the Netherlands.
Nancy Baron
Nancy Baron is an American rock singer who was active in New York City in the early 1960s, known for the singles" Where Did My Jimmy Go?" and" I've Got A Feeling".
Prince Bernhard of Orange-Nassau, van Vollenhoven
Prince Bernhard Lucas Emmanuel of Orange- Nassau, van Vollenhoven( born 25 December 1969) is the second son of Princess Margriet of the Netherlands and Pieter van Vollenhoven.
Before the succession of his cousin Willem- Alexander as King, he was a member of the Dutch Royal House and eleventh in the line of succession to the Dutch throne.
With Willem- Alexander's succession however, he is no longer a member of the Dutch Royal House, and is no longer in line to direct succession to the Dutch throne, but still retains its membership as a member of the Dutch Royal Family

Question: Where did Princess Margriet Of The Netherlands's mother graduate from?
Answer: University of Leiden