Archduchess Maria Anna of Austria (1770–1809)
Archduchess Maria Anna of Austria ("Maria Anna Ferdinanda Josepha Charlotte Johanna";
21 April 1770 – 1 October 1809) was an Archduchess of Austria by birth, and an Abbess at the Theresian Convent in Prague.
Archduchess Maria Elisabeth of Austria (1737–1740)
Archduchess Maria Elisabeth of Austria( Full name( German):" Maria Elisabeth Amalia Antonia Josefa Gabriele Johanna Agathe"; 5 February 1737 – 7 June 1740), was the eldest child and daughter of Archduchess Maria Theresa of Austria, later Queen of Hungary and Bohemia, and Duke Francis of Lorraine, later Francis I, Holy Roman Emperor.
Archduchess Maria Anna of Austria (1610–1665)
Archduchess Maria Anna of Austria
(German: "
Maria Anna von Habsburg, Erzherzogin von Österreich", also known as "Maria Anna von Bayern" or "Maria-Anna, Kurfürstin von Bayern"; 13 January 1610 – 25 September 1665), was a German regent, Electress of Bavaria by marriage to Maximilian I, Elector of Bavaria, and co-regent of the Electorate of Bavaria during the minority of her son Ferdinand Maria, Elector of Bavaria from 1651 to 1654.
Archduchess Maria Anna of Austria (governor)
Archduchess Maria Anna of Austria(" Maria Anna Eleanor Wilhelmina Josepha"; 18 September 1718 in Vienna – 16 December 1744 in Brussels) was a member of the House of Habsburg who governed the Austrian Netherlands in the name of her elder sister, Empress Maria Theresa.
Archduchess Maria Anna of Austria (1738–1789)
Archduchess Maria Anna of Austria (Maria Anna Josepha Antonia; 6 October 1738 – 19 November 1789) was the second child of Francis I, Holy Roman Emperor, and Maria Theresa, Queen of Hungary and Bohemia.
As a child, and for a time the eldest surviving child, she was heiress presumptive, but she suffered from ill health and physical disability, and did not marry.
In 1766 she became abbess of the "Frauenstift" in Prague.
Soon thereafter she moved to Klagenfurt and remained there for the rest of her life.
Her palace in Klagenfurt, the "Mariannengasse", now houses the Episcopal Palace.
Maria Anna of Austria
Maria Anna of Austria (Maria Anna Josepha Antonia Regina; 7 September 1683 – 14 August 1754) was Queen consort of Portugal by marriage to King John V of Portugal.
She was Regent of Portugal from 1742 until 1750 during the illness of John V.
Archduchess Maria Carolina of Austria (1740–1741)
Archduchess Maria Carolina of Austria (
Maria Carolina Ernestina Antonia Johanna Josefa; 12 January 1740 – 25 January 1741), was the third child and daughter of Archduchess Maria Theresa of Austria, later Holy Roman Empress and Duke Francis of Lorraine.
Maria Anna of Bavaria (1574–1616)
Maria Anna of Bavaria (18 December 1574 – 8 March 1616), was German princess member of the House of Wittelsbach by birth and Archduchess consort of Inner Austria by marriage.
Born in Munich, she was the fourth child and second (but eldest surviving) daughter of William V, Duke of Bavaria and Renata of Lorraine.
Maria Anna of Savoy
Maria Anna of Savoy( 19 September 1803 – 4 May 1884) was Empress of Austria and Queen of Hungary( see Grand title of the Empress of Austria) by marriage to Emperor Ferdinand I of Austria.
Archduchess Maria Anna of Austria (1835–1840)
Archduchess
Maria Anna of Austria( 27 October 1835 – 5 February 1840), was by birth an Archduchess of Austria and member of the House of Habsburg.
She was the fourth child and only daughter of Archduke Franz Karl of Austria and his wife, Princess Sophie of Bavaria, daughter of Maximilian I Joseph of Bavaria and his second wife Caroline of Baden.

Question: Who is Archduchess Maria Anna Of Austria (1610–1665)'s maternal grandfather?
Answer: William V, Duke of Bavaria