Adelaide of Hesse
Adelaide of Hesse( after 1323 – after May 26, 1371) was a daughter of Henry II, Landgrave of Hesse, and his wife Elisabeth of Thuringia, daughter of Frederick I, margrave of Meissen.
Adelaide was a member of the House of Hesse.
William II, Landgrave of Hesse-Wanfried-Rheinfels
William II, Landgrave of Hesse- Wanfried- Rheinfels( also known as" William the Younger"; born: 25 August 1671 in Langenschwalbach; died: 1 April 1731 in Paris, and also buried there) was a son of the Landgrave Charles of Hesse- Wanfried( 1649 – 1711) and his first wife, Sophie Magdalene of Salm- Reifferscheid( d. 1675).
He succeeded his father as Landgrave of Hesse- Wanfried and Hesse- Rheinfels.
After 1711, he styled himself" Landgrave of Hesse- Rheinfels".
Henry II, Landgrave of Hesse
Henry II of Hesse (German: "Heinrich"), (c. 1299 – 3 June 1376) called "the Iron" was Landgrave of Hesse from 1328–1376.
Henry was the son of Otto I, Landgrave of Hesse and Adelheid of Ravensburg.
With his wife Elisabeth of Thuringia, daughter of Frederick I, Margrave of Meissen, he had five children:
When Henry's son Otto died in 1366, his nephew Hermann was named co-regent.
This caused fighting to break out with Otto of Brunswick.
To defray the costs of the conflict with Brunswick, Henry levied a tax on all imported goods.
Moritz, Landgrave of Hesse
Moritz, Prince and Landgrave of Hesse(" Moritz Friedrich Karl Emanuel Humbert" 6 August 1926 – 23 May 2013) was the son of Prince Philip, Landgrave of Hesse, and the head of the House of Brabant and the German House of Hesse.
William I, Elector of Hesse
William I, Elector of Hesse( 3 June 1743 – 27 February 1821) was the eldest surviving son of Frederick II, Landgrave of Hesse- Kassel( or Hesse- Cassel) and Princess Mary of Great Britain, the daughter of George II.
Philip, Landgrave of Hesse-Philippsthal
Philip of Hesse- Philippsthal( 14 December 1655 – 18 June 1721) was the son of William VI, Landgrave of Hesse- Kassel and Hedwig Sophia of Brandenburg.
He was the first landgrave of Hesse- Philippsthal from 1663 to 1721 and the founder of the fifth branch of the house of Hesse.
Margravine Philippine of Brandenburg-Schwedt
Margravine Philippine Auguste Amalie of Brandenburg- Schwedt( 10 October 1745 – 1 May 1800) was a Landgravine consort of Hesse- Kassel by marriage to Frederick II, Landgrave of Hesse- Cassel.
Henry I, Landgrave of Hesse
Henry I of Hesse" the Child"( German:" Heinrich das Kind")( 24 June 1244 – 21 December 1308) was the first Landgrave of Hesse.
He was the son of Henry II, Duke of Brabant and Sophie of Thuringia.
Charles I, Landgrave of Hesse-Philippsthal
Charles I, Landgrave of Hesse- Philippsthal( 23 September 1682 – 8 May 1770) was a member of the House of Hesse and Landgrave of Hesse- Philippsthal from 1721 until his death.
Otto I, Landgrave of Hesse
Otto I of Hesse (c. 1272 – 17 January 1328) was Landgrave of Hesse from 1308 until his death.
Otto was born in Marburg, a son of Henry I, Landgrave of Hesse and his first wife Adelheid of Brunswick-Lunenburg.
Following the death of his father in 1308, he inherited Upper Hesse, the "Land on the Lahn", which included Marburg, Giessen, Grünberg and Alsfeld.
After his half-brother John died in 1311, he also became landgrave of Lower Hesse.
This included the area below the Fulda, Eder, Schwalm, Werra, and the upper reaches of the Weser, with the residence of Kassel, as well as the towns of Homberg (Efze), Melsungen, and Rotenburg an der Fulda.
After Otto inherited the whole Landgraviate, he resided alternately in Kassel and Marburg.
Otto had a long conflict with the Archbishop of Mainz, Matthias von Bucheck.
In 1324 Mainz won the battle in the Lahnberg with help from troops from Amöneburg.
In 1327, Mainz adopted Giessen with the help of troops from the Electorate of Trier, but the citizens of the town quickly enabled Otto to regain control.
Only after Otto's victory at Wetzlar and with the mediation of King John of Luxembourg in 1328 was conciliation made possible.
Otto died on 17 January 1328 in Kassel, and was buried in the Ahnaberg monastery.

Question: Who is the paternal grandfather of Henry Ii, Landgrave Of Hesse?
Answer: Henry I, Landgrave of Hesse