Marie Madeleine d'Aiguillon
Marie Madeleine de Vignerot du Pont de Courlay, Duchesse d' Aiguillon( 160417 April 1675) was a French aristocrat, also remembered for her charitable work and her patronage of artists and mathematicians.
Septimanie d'Egmont
Septimanie d' Egmont or Jeanne Sophie de Vignerot du Plessis( Jeanne Louise Armande Élisabeth Sophie" Septimanie"; 1740 in Languedoc- 14 October 1773), was a French salonist.
Emmanuel-Armand de Richelieu, duc d'Aiguillon
Emmanuel- Armand de Vignerot du Plessis- Richelieu, duc d' Aiguillon( 31 July 17201 September 1788), was a French soldier and statesman, and a nephew of Armand de Vignerot du Plessis, 3rd Duke of Richelieu.
He served as the Secretary of State for Foreign Affairs under King Louis XV.
Philippe de Mornay
Philippe de Mornay (5 November 1549 – 11 November 1623), seigneur du Plessis Marly, usually known as Du-Plessis-Mornay or Mornay Du Plessis, was a French Protestant writer and member of the anti-monarchist "Monarchomaques".
Antoine de Vignerot du Plessis
Louis" Antoine" Sophie de Vignerot du Plessis, 4th Duke of Richelieu( 4 February 1736 – 1791), was a French nobleman and general.
He was known by the courtesy title of Duke of Fronsac before 1788.
He also held the titles of Prince de Mortagne, Marquis du Pont- Courlay, Comte de Cosnac, Baron de Barbezieux, Baron de Coze and Baron de Saugeon.
Armand Jean de Vignerot du Plessis
Armand Jean de Vignerot du Plessis, 2nd Duke of Richelieu (Paris, 3 October 1629 - Paris, 20 May 1715), was a French naval officer and nobleman.
Élisabeth Sophie de Lorraine
Élisabeth Sophie de Lorraine (Marie Élisabeth Sophie; 1710 – 2 August 1740.) was a French noblewoman and the second wife of Armand de Vignerot du Plessis, the notoriously lecherous Duke of Richelieu.
Armand de Vignerot du Plessis
Louis François "Armand" de Vignerot du Plessis, 3rd Duke of Richelieu (13 March 1696 – 8 August 1788), was a French soldier, diplomat and statesman.
He joined the army and participated in three major wars.
He eventually rose to the rank of Marshal of France.
He was the son of Armand Jean de Vignerot du Plessis, 2nd Duke of Richelieu, who in turn was a great-nephew of Cardinal Richelieu, the prominent French statesman who had dominated France in the early 17th century.
Morné du Plessis
Morné du Plessis OIS( born 21 October 1949) is a former South African rugby union player often described as one of the Springboks' most successful captains.
During the five years from 1975 to 1980 that he served as captain, the Springboks won 13 of 15 matches, giving Du Plessis an 86.66% success rate as captain.
Du Plessis's father, Felix, was also the captain of a Springbok rugby team, and his mother, Pat, captained the South African women's hockey side.
Felix and Morné are the only father- and- son duo so far to have both been Springbok rugby captains, and Morné is the only Springbok captain born to parents both of whom captained national sports sides.
Morné du Plessis was appointed manager of the 1995 Springbok team which won the 1995 Rugby World Cup.
Du Plessis co-founded with Tim Noakes both the Sports Science Institute of South Africa in Cape Town, and the Bioenergetics of Exercise Research Unit of the University of Cape Town and the Medical Research Council( renamed UCT/ MRC Research Unit for Exercise Science and Sports Medicine in 2000).
Armand, duc d'Aiguillon
Armand- Désiré de Vignerot du Plessis- Richelieu, duc d' Aiguillon( 31 October 1761 – 4 May 1800), was a French military officer and politician.

Question: When did Armand De Vignerot Du Plessis's father die?
Answer: 20 May 1715