Francis IV, Duke of Modena
Francis IV Joseph Charles Ambrose Stanislaus (Italian: "Francesco IV Giuseppe Carlo Ambrogio Stanislao d'Asburgo-Este"; 6 October 1779 – 21 January 1846) was Duke of Modena, Reggio, and Mirandola (from 1815), Duke of Massa and Prince of Carrara (from 1829), Archduke of Austria-Este, Royal Prince of Hungary and Bohemia, Knight of the Order of the Golden Fleece.
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 Beatrix of Austria-Este
Archduchess Maria Beatrix of Austria-Este (13 February 1824 – 18 March 1906) was the consort of the Carlist pretender, Juan, Count of Montizón and, by birth, a member of the House of Austria-Este which had ruled the Duchy of Modena.
She was born in Modena, the youngest daughter of Francis IV of Modena and his niece consort, Maria Beatrice of Savoy.
Archduke Maximilian of Austria-Este
Archduke Maximilian Joseph of Austria- Este( July 14, 1782 – June 1, 1863), the fourth son of Archduke Ferdinand of Austria- Este and younger brother of Francis IV, Duke of Modena.
He was grand master of the Teutonic Knights from 1835 to 1863.
Archduchess Maria Leopoldine of Austria-Este
Archduchess Maria Leopoldine of Austria- Este( 10 December 1776 – 23 June 1848), was an Electress of Bavaria as the second spouse of Charles Theodore, Elector of Bavaria.
Princess Elisabetta of Belgium
Princess Elisabetta of Belgium, Archduchess of Austria- Este( née" Nob." Elisabetta Rosboch von Wolkenstein on 9 September 1987) is the wife of Prince Amedeo of Belgium, Archduke of Austria- Este.
Prince Lorenz of Belgium, Archduke of Austria-Este
Prince Lorenz of Belgium, Archduke of Austria- Este( born 16 December 1955) is a member of the Belgian royal family by his marriage with Princess Astrid of Belgium.
Since 1996 he is also head of the House of Austria- Este, a cadet branch of the former Imperial Austrian House of Habsburg- Lorraine.
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 Theresa of Austria-Este (1849–1919)
Maria Theresa of Austria-Este (Maria Theresa Henriette Dorothee; 2 July 1849 – 3 February 1919) was the last Queen of Bavaria.
She was the daughter and only child of Archduke Ferdinand of Austria-Este and his wife, Archduchess Elisabeth of Austria.
Maria Ludovika of Austria-Este
Maria Ludovika of Austria- Este, also known as Maria Ludovika of Modena,( 14 December 1787 – 7 April 1816) was the daughter of Archduke Ferdinand of Austria- Este( 1754 – 1806) and his wife, Maria Beatrice Ricciarda d' Este( 1750 – 1829).
She was a member of the House of Austria- Este, a branch of the House of Habsburg- Lorraine.

Question: When did Archduchess Maria Beatrix Of Austria-Este's father die?