William IV, Count of Nevers
William IV, Count of Nevers,( c. 1130 – Acre, 24 October 1168) Count of Nevers, Auxerre and Tonnerre( 1161 – 1168).
Renauld II, Count of Nevers
Renauld II, Count of Nevers and Auxerre (died 1089) was the son of William I of Nevers, Count of Nevers and Ermengarde of Tonnerre.
He married Ida, daughter of Artald V, Count of Forez.
They had a child:
Later he married Agnes of Beaugency.
They had:
William I, Count of Nevers
William I, Count of Nevers, was the son of Renauld I, Count of Nevers and Hedwig of France, Countess d' Auxerre.
In 1040 he succeeded his father as Count of Nevers and d'Auxerre and in 1065 he was also the Count of Tonnerre.
He married Ermengarde, daughter of Renauld, Count of Tonnerre about 1039.
William died at Nevers 20 June 1100.
William I and Ermengarde had six children:
William III, Count of Nevers
William III, Count of Nevers( c. 1107 – 21 November 1161) was Count of Nevers, Auxerre and Tonnerre( 1148 – 1161).
He was born in Auxerre.
Engelbert, Count of Nevers
Engelbert of Cleves, Count of Nevers( 26 September 1462 – 21 November 1506) was the younger son of John I, Duke of Cleves and Elizabeth of Nevers, only surviving child of John II, Count of Nevers.
In 1481, he was sent with a large army to the Bishopric of Utrecht by his brother John II, Duke of Cleves where they successfully ousted David of Burgundy.
But after the Siege of Utrecht( 1483) he had to flee, and Utrecht returned to the control of Burgundy.
He married Charlotte of Bourbon- Vendôme, daughter of John VIII, Count of Vendôme, circa 1489.
Their son Engelbert became Count of Nevers and Eu in 1491 upon the death of his maternal grandfather John II, Count of Nevers.
His eldest brother John II( 1458 – 1521) inherited Cleves.
Héctor Barrantes
Héctor Barrantes Sansoni( 1939–1990) was an Argentine polo player.
He was the stepfather of Sarah, Duchess of York.
John II, Count of Nevers
John II, Count of Nevers( known as Jean de Clamecy, prior to acquiring title of" Count of Nevers"; 1415–1491) was a French noble.
Bonne of Artois
Bonne of Artois( 1396 – 17 September 1425, Dijon) was Countess consort of Nevers by marriage to Philip II, Count of Nevers, and Duchess consort of Burgundy by marriage to Philip III, Duke of Burgundy.
She served as regent of the County of Nevers during the minority of her son from 1415 until 1424.
Charles I, Count of Nevers
Charles I, Count of Nevers( 1414 – 25 May 1464), Count of Nevers and Rethel, was the son of Philip II, Count of Nevers, and Bonne of Artois.
Towards the end of the life of Philip III, Duke of Burgundy, Charles fell under suspicion of practising witchcraft, in an effort to supplant Charles, Count of Charolais, as the heir.
Charles I fled to France and died soon after.
He married Marie d' Albret, daughter of Charles II d' Albret on 11 June 1456, but had no legitimate children.
He was succeeded by his brother John.
Ermengarde of Tonnerre
Ermengarde (1032 – 1083), daughter of Renauld, Count of Tonnerre and Herviz, she married William I, Count of Nevers in 1045.
She had six children:
Her husband William
I was the son of Renauld I, Count of Nevers and Hedwig/Advisa of Auxerre, daughter of Robert II of France.

Question: Who is the father of Renauld Ii, Count Of Nevers?