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.
Charles II, Duke of Bourbon
Charles II, Duke of Bourbon( Château de Moulins, 1434 – September 13, 1488, Lyon), was Archbishop of Lyon from an early age and a French diplomat under the rule of Louis XI of France.
He had a 2- week tenure as Duke of Bourbon in 1488, being ousted afterward by his younger brother and successor, Peter II, Duke of Bourbon.
Alexander Farnese, Prince of Parma
Alessandro Farnese (10 January 1635 – 18 February 1689) was an Italian military leader, who was Governor of the Habsburg Netherlands from 1678 until 1682.
He is not to be confused with his better known great-grandfather Alexander Farnese, Duke of Parma.
This Alessandro was often called Alessandro di Odoardo (son of Odoardo).
His title was "Prince of Parma".
His elder brother Ranuccio II was the sixth Duke of Parma and Piacenza .
Louis I of Etruria
Louis I (5 July 1773 – 27 May 1803) was the first of the two kings of Etruria.
Louis was the son of Ferdinand, Duke of Parma, and Maria Amalia of Austria.
He was born in 1773, when his great-grandfather, King Louis XV of France, was still alive.
Charles II, Duke of Elbeuf
Charles II, Duke of Elbeuf
( 5 November 1596 – 5 November 1657), was a French nobleman, the son of Charles I, Duke of Elbeuf, by his wife, Marguerite de Chabot.
He succeeded his father in the Elbeuf dukedom( Elboeuf is an alternate, anglicized spelling) in 1605.
Maria Teresa of Savoy (1803–1879)
Maria Teresa of Savoy,
( Maria Teresa Fernanda Felicitas Gaetana Pia; 19 September 1803 – 16 July 1879) was Duchess consort of Parma and Piacenza by marriage to Charles II, Duke of Parma( Duke Charles I of Lucca).
Margherita Farnese
Margherita Farnese (7 November 1567 – 13 April 1643) was a daughter of Alexander Farnese, Duke of Parma and Infanta Maria of Guimarães.
She was named after her father's mother Margaret of Parma, illegitimate daughter of Charles V, Holy Roman Emperor.
Maria of Brabant, Duchess of Bavaria
Maria of Brabant( 1226–1256) was a daughter of Henry II, Duke of Brabant, and Maria of Swabia.
She married Louis II, Duke of Bavaria, being the first of three wives.
Princess Alice of Parma (1849–1935)
Princess Alice of Bourbon- Parma( 27 December 1849 in Parma, Duchy of Parma – 16 January 1935 in Schwertberg, Austria) was the youngest daughter of Charles III, Duke of Parma and Princess Louise Marie Thérèse of France, the eldest daughter of Charles Ferdinand, Duke of Berry and Princess Caroline Ferdinande Louise of the Two Sicilies.
Charles III, Duke of Parma
Charles III( 14 January 1823 – 27 March 1854) was Duke of Parma from 1849 to 1854.
He was the only son of Charles II Duke of Parma and was educated in Saxony and Vienna.
He grew up as a restless young man and traveled extensively while he was hereditary Prince of Lucca.
For a time he served in the Piedmontese army with the rank of Captain.
In 1845, his father arranged his marriage with Princess Louise Marie of France, a wealthy heiress who gave him four children.
In December 1847, at the death of Empress Marie Louise, his father Charles II became the reigning Duke of Parma, but abdicated on 24 March 1849.
Charles III became the Duke of Parma, Piacenza and the Annexed States.
Charles III owed his throne to the support of Austrian troops.
He placed Parma under martial law, inflicted heavy penalties on the members of the late provisional government, closed the university, and instituted a regular policy of persecution.
His authoritarian policies made him unpopular.
After reigning only five years, he was assassinated in March 1854.

Question: Who is the paternal grandfather of Charles Ii, Duke Of Parma?