Question: What is the date of death of Victor-François, 8Th Duc De Broglie's father?

Knowledge 1: Victor-François, 8th duc de Broglie
Victor-François Marie Léon, 8th duc de Broglie (25 March 1949, in Paris – 12 February 2012, in Broglie) was a French aristocrat and holder of the title of duc de Broglie.The duke was born in Paris, the eldest son of Prince Jean de Broglie (1921–1976).He acceded to the ducal title in 1987, after the death of his distant cousin, physicist and Nobel laureate Louis, 7th duc de Broglie, without heirs.His father Jean's great-grandfather, Albert, 4th duc de Broglie, was Louis de Broglie's grandfather, and there was no other surviving senior male.The duke was active in local politics in the Eure, and has served as mayor of the ducal seat of Broglie.He died suddenly in castle of Broglie on 12 February 2012 ("Le Figaro", 14 February 2012, p. 15).The duke was unmarried, and his titles were inherited by his younger brother, also unmarried.However, there is another younger brother and several junior cousins, some with young sons. [SEP] Knowledge 2: Jean de Broglie
Prince Jean Marie François Ferdinand de Broglie (21 June 1921 – 24 December 1976) was a French politician.Born in Paris, he was one of the negotiators of the Évian Accords.Jean de Broglie was assassinated on 24 December 1976 while coming out of the house of Pierre de Varga.His financial advisor, Varga was quickly arrested; in 1981, he was sentenced to ten years imprisonment for complicity in the assassination.Jean de Broglie was the first son of Prince Eugene Marie Amédée de Broglie (1891–1957), himself the fourth son of Prince François Marie Albert de Broglie (1851–1939), himself the fourth son of Albert de Broglie, 4th duc de Broglie, whose mother, Albertine de Staël-Holstein (1797–1838), was the daughter of Germaine de Staël and, reputedly, Benjamin Constant.By his wife Micheline Segard (1925–1997), he had three sons:
President de Assembly National 1959
Knowledge 1: Victor-François, 8th duc de Broglie
Victor-François Marie Léon, 8th duc de Broglie (25 March 1949, in Paris – 12 February 2012, in Broglie) was a French aristocrat and holder of the title of duc de Broglie.The duke was born in Paris, the eldest son of Prince Jean de Broglie (1921–1976).He acceded to the ducal title in 1987, after the death of his distant cousin, physicist and Nobel laureate Louis, 7th duc de Broglie, without heirs.His father Jean's great-grandfather, Albert, 4th duc de Broglie, was Louis de Broglie's grandfather, and there was no other surviving senior male.The duke was active in local politics in the Eure, and has served as mayor of the ducal seat of Broglie.He died suddenly in castle of Broglie on 12 February 2012 ("Le Figaro", 14 February 2012, p. 15).The duke was unmarried, and his titles were inherited by his younger brother, also unmarried.However, there is another younger brother and several junior cousins, some with young sons. [SEP] Knowledge 2: Louis de Broglie
Louis Victor Pierre Raymond de Broglie, 7th duc de Broglie( 15 August 1892 – 19 March 1987) was a French physicist who made groundbreaking contributions to quantum theory.In his 1924 PhD thesis, he postulated the wave nature of electrons and suggested that all matter has wave properties.This concept is known as the de Broglie hypothesis, an example of wave – particle duality, and forms a central part of the theory of quantum mechanics.De Broglie won the Nobel Prize for Physics in 1929, after the wave- like behaviour of matter was first experimentally demonstrated in 1927.The 1925 pilot- wave model, and the wave- like behaviour of particles discovered by de Broglie was used by Erwin Schrödinger in his formulation of wave mechanics.The pilot- wave model and interpretation was then abandoned, in favor of the quantum formalism, until 1952 when it was rediscovered and enhanced by David Bohm.Louis de Broglie was the sixteenth member elected to occupy seat 1 of the Académie française in 1944, and served as Perpetual Secretary of the French Academy of Sciences.De Broglie became the first high- level scientist to call for establishment of a multi-national laboratory, a proposal that led to the establishment of the European Organization for Nuclear Research( CERN).
Knowledge 1: Louis de Broglie
Louis Victor Pierre Raymond de Broglie, 7th duc de Broglie( 15 August 1892 – 19 March 1987) was a French physicist who made groundbreaking contributions to quantum theory.In his 1924 PhD thesis, he postulated the wave nature of electrons and suggested that all matter has wave properties.This concept is known as the de Broglie hypothesis, an example of wave – particle duality, and forms a central part of the theory of quantum mechanics.De Broglie won the Nobel Prize for Physics in 1929, after the wave- like behaviour of matter was first experimentally demonstrated in 1927.The 1925 pilot- wave model, and the wave- like behaviour of particles discovered by de Broglie was used by Erwin Schrödinger in his formulation of wave mechanics.The pilot- wave model and interpretation was then abandoned, in favor of the quantum formalism, until 1952 when it was rediscovered and enhanced by David Bohm.Louis de Broglie was the sixteenth member elected to occupy seat 1 of the Académie française in 1944, and served as Perpetual Secretary of the French Academy of Sciences.De Broglie became the first high- level scientist to call for establishment of a multi-national laboratory, a proposal that led to the establishment of the European Organization for Nuclear Research( CERN). [SEP] Knowledge 2: Victor-François, 2nd duc de Broglie
Victor François de Broglie, 2nd duc de Broglie( 19 October 171830 March 1804) was a French aristocrat and soldier and a marshal of France.He served with his father, François- Marie, 1st duc de Broglie, at Parma and Guastalla, and in 1734 obtained a colonelcy.In the War of the Austrian Succession, he took part in the storming of Prague in 1742, and was made a brigadier.In 1744 and 1745 he saw further service on the Rhine, and he succeeded his father as 2nd duc de Broglie on the old duke's death in 1745.He was made a" Maréchal de Camp," and he subsequently served with Marshal de Saxe in the Low Countries, and was present at Roucoux, Val and Maastricht.At the end of the war, he was made a lieutenant- general.During the Seven Years' War, he served successively under Louis Charles César Le Tellier, duc d'Estrées, Charles de Rohan, prince de Soubise, and Contades, being present at all the battles from Hastenbeck onwards.His victory over Prince Ferdinand at Bergen( 1759) won him the rank of marshal of France from the French King Louis XV and the title of Prince of the Holy Roman Empire" Reichsfürst" from Holy Roman Emperor Francis I. In 1759, he won the Battle of Bergen and followed that with the capture the city of Minden, later fighting at the Battle of Minden under the command of Contades, whom he would succeed in command.In 1760, he won an action at the Korbach, but was defeated at Villinghausen in 1761.After the war, he fell into disgrace and was not recalled to active employment until 1778, when he was given command of the troops designed to operate against Great Britain, when France intervened on the Thirteen Colonies' side during the American war of independence.He played a prominent part in the French Revolution, which he opposed with determination; he commanded troops at Versailles in July 1789 and briefly served as Louis XVI's minister of war before fleeing France.After his emigration, the duc de Broglie commanded the Army of the Princes for a short time( 1792).Since the duke's eldest son, Charles- Louis- Victor, prince de Broglie, died in the Terror, the succession fell to his grandson, who became the third duc de Broglie.He died at Münster in 1804.

Answer: 24 December 1976