Richard Wesley, 1st Baron Mornington
Richard Colley Wesley, 1st Baron Mornington (– 31 January 1758) was an Irish peer, best remembered as the grandfather of Arthur Wellesley, 1st Duke of Wellington.
Charles II, Duke of Parma
Charles Louis( 22 December 1799 – 16 April 1883) was King of Etruria( 1803 – 1807; reigned as Louis II), Duke of Lucca( 1824 – 1847; reigned as Charles I), and Duke of Parma( 1847 – 1849; reigned as Charles II).
He was the only son of Louis, Prince of Piacenza, and his wife Infanta Maria Luisa of Spain.
Born at the Royal Palace of Madrid at the court of his maternal grandfather King Charles IV of Spain, he spent his first years living at the Spanish court.
In 1801, by the Treaty of Aranjuez, Charles became Crown Prince of Etruria, a newly created kingdom formed from territories of the Grand Duchy of Tuscany.
Charles moved to Italy with his parents and in 1803, not yet four years old, he succeeded his father as King of Etruria under the name Charles Louis I. His mother Infanta Maria Luisa assumed the regency while Charles Louis' minority lasted.
In 1807 Napoleon Bonaparte dissolved the kingdom of Etruria and Charles Louis and his mother took refuge in Spain.
In May 1808 they were forced to leave Spain by Napoleon who arrested Charles Louis' mother in a convent in Rome.
Between 1811 and 1814 Charles Louis was placed under the care of his grandfather, the deposed King Charles IV of Spain.
After Napoleon's fall, in 1817, Infanta Maria Luisa became Duchess of Lucca in her own right and Charles Louis, age sixteen, became hereditary Prince of Lucca.
In 1820 he married Princess Maria Teresa of Savoy.
They were a mismatched couple and had only one surviving son.
At his mother's death in 1824, Charles Louis became the reigning Duke of Lucca as Charles I.
He had little interest in ruling.
He left the duchy in the hands of his ministers and spent most of his time traveling around Europe.
A liberal movement led him to abdicate Lucca in favor of the Grand Duke of Tuscany in October 1847 in exchange for financial compensation, as he wanted to retire to private life.
Two months later, in December 1847, at the death of the former Empress Marie Louise, he succeeded her as the reigning Duke of Parma according to what had been stipulated by the Congress of Vienna.
His reign in Parma as Duke Charles II was brief.
He was ill- received by his new subjects and within a few months he was ousted by a revolution.
He regained control of Parma under the protection of Austrian troops, but finally abdicated in favor of his son Charles III on 14 March 1849.
His son was assassinated in 1854 and his grandson Robert I, the last reigning Duke of Parma, was deposed in 1860.
In exile Charles Louis assumed the title of count of Villafranca.
He spent the last years of his life mostly in France, dying at Nice on 16 April 1883.
Prince Charles Louis, Duke of Chartres
Prince Charles Louis of Orléans, Duke of Chartres
(Charles Louis Henri
Foulques Benoît Elzéar Jean Marie; born 28 July 1972) is the elder son of Prince Jacques, Duke of Orléans and Gersende de Sabran-Pontevès.
Charles Louis d'Albert de Luynes
Charles Louis d'Albert de Luynes (Marie Charles Louis; 24 April 1717 – 8 October 1771) was a French nobleman and member of the House of Albert.
He was the fifth Duke of Luynes as well as Duke of Chevreuse.
William Montagu Douglas Scott, 6th Duke of Buccleuch
William Henry Walter Montagu Douglas Scott, 6th Duke of Buccleuch and 8th Duke of Queensberry( 9 September 1831 – 5 November 1914) was a Scottish Member of Parliament and peer.
He was the paternal grandfather of Princess Alice, Duchess of Gloucester, and the maternal great- grandfather of Prince William of Gloucester and Prince Richard, Duke of Gloucester.
He was a paternal great- great- grandfather to Sarah, Duchess of York.
William of Conches
William of Conches( c. 1090 – after 1154) was a French scholastic philosopher who sought to expand the bounds of Christian humanism by studying secular works of the classics and fostering empirical science.
He was a prominent member of the School of Chartres.
John of Salisbury, a bishop of Chartres and former student of William's, refers to William as the most talented grammarian after Bernard of Chartres.
Prince Jacques, Duke of Orléans
Prince Jacques of Orléans, Duke of Orléans, "fils de France" (Jacques Jean Jaroslaw Marie; born 25 June 1941 in Rabat, Morocco), is the son of Henri, Count of Paris (the Orléanist claimant to the French throne from 1940 until his death) and his wife, Princess Isabelle of Orléans-Braganza.
Ernst I, Prince of Hohenlohe-Langenburg
Ernst Christian Carl, 4th Prince of Hohenlohe- Langenburg( 7 May 1794 – 12 April 1860).
He was the son of Prince Charles Louis of Hohenlohe- Langenburg and Countess Amalie Henriette of Solms- Baruth.
Christian Louis I, Duke of Mecklenburg
Christian Louis I, Duke of Mecklenburg- Schwerin( 1 December 1623 in Schwerin – 21 June 1692 in The Hague) was a reigning Duke of Mecklenburg- Schwerin.
Prince Henri of Orléans
Prince Henri of Orléans( 16 October 1867 – 9 August 1901) was the son of Prince Robert, Duke of Chartres, and Princess Françoise of Orléans.

Question: Who is the paternal grandfather of Prince Charles Louis, Duke Of Chartres?
Answer: Henri, Count of Paris