Hermann, Prince of Hohenlohe-Langenburg
Hermann Ernst Franz Bernhard, Prince of Hohenlohe- Langenburg( 31 August 1832 – 9 March 1913) was the 6th Prince of Hohenlohe- Langenburg and the second son of Ernst I, Prince of Hohenlohe- Langenburg and Princess Feodora of Leiningen( half- sister of Queen Victoria).
He succeeded to the title of Prince of Hohenlohe- Langenburg(" Fürst zu Hohenlohe- Langenburg") on 21 April 1860, when his elder brother signed over his rights to the throne.
He died on 9 March 1913 in Langenburg, Kingdom of Württemberg, German Empire( present- day Baden- Württemberg, Germany).
Kraft, Prince of Hohenlohe-Langenburg
Kraft, 9th Prince of Hohenlohe- Langenburg( 25 June 1935 – 16 March 2004) was the eldest son of Gottfried, Prince of Hohenlohe- Langenburg.
He was the titular Prince of Hohenlohe- Langenburg from 1960 until his death.
Christian Albrecht, Prince of Hohenlohe-Langenburg
Christian Albrecht, 2nd Prince of Hohenlohe- Langenburg( 27 March 1726 in Langenburg – 4 July 1789 in Ludwigsruhe), was the second ruling Prince of Hohenlohe- Langenburg and a Dutch lieutenant- general.
He was the first child of Ludwig, Prince of Hohenlohe- Langenburg and Countess Eleonore of Nassau- Saarbrücken.
On 7 January 1764, his father was elevated to an Imperial Prince by Emperor Francis I.
Magdalena of Nassau-Dillenburg
Magdalena of Nassau-Dillenburg (15 December 1547 at Dillenburg Castle in Dillenburg – 16 May 1633 in Öhringen) was a daughter of William I, Count of Nassau-Dillenburg and his second wife, Juliana of Stolberg.
Magdalena was a sister of William the Silent.
Philip Ernest, Count of Hohenlohe-Langenburg
Philip Ernest, Count of Hohenlohe-Langenburg (11 August 1584 in Langenburg – 29 January 1628 in Weikersheim), was Count of Hohenlohe-Langenburg and was the fourth son of Wolfgang, Count of Hohenlohe-Weikersheim (1546–1610), who later became regent of the county of Weikersheim and his wife Magdalena of Nassau-Dillenburg (1547–1643).
He served in the Dutch army until he inherited the Dutch from his uncle, Philip of Hohenlohe-Neuenstein.
When his father died in 1610, he and his brothers George Frederick (1569–1647) and Kraft (1582–1641) divided the inheritance.
George Frederick received Weikersheim; Kraft received Neuenstein and Philip Ernest received the Lordship of Langenburg.
He immediately began the construction of Langenburg Castle.
He spent much of his time in the Netherlands, until he was relieved of his duties as a colonel by the States-General.
He died in 1628, at the age of 44, in Weikersheim, of a "stone disease".
He was buried, together with his wife, in the crypt of the church in Langenburg.
A stone monument commemorating the couple can be found behind the altar.
Carl Ludwig II, Prince of Hohenlohe-Langenburg
Carl Ludwig II, 5th Prince of Hohenlohe- Langenburg( 25 October 182916 May 1907), was the eldest son of Ernst I, Prince of Hohenlohe- Langenburg.
He was the fifth Prince of Hohenlohe- Langenburg.
Gottfried, Prince of Hohenlohe-Langenburg
Gottfried, 8th Prince of Hohenlohe- Langenburg( 24 March 189711 May 1960) was the only surviving son of Ernst II, Prince of Hohenlohe- Langenburg.
Henry Frederick, Count of Hohenlohe-Langenburg
Henry Frederick, Count of Hohenlohe- Langenburg( 7 September 1625 in Langenburg – 2 June 1699 ibid) was the youngest child of Count Philip Ernest of Hohenlohe- Langenburg and his wife Countess Anna Maria of Solms- Sonnewalde.
He was head of the house of Hohenlohe- Langenburg and added the bell tower to the town church of Langenburg, which supports four bells, and still stands today.
The count worked hard and successfully to rebuild his county, which suffered badly during the Thirty Years' War.
He also managed to reduce the county's public debt.
Ludwig, Prince of Hohenlohe-Langenburg
Ludwig of Hohenlohe- Langenburg( 20 October 1696 in Langenburg – 16 January 1765 in Langenburg) was a Count of Hohenlohe- Langenburg.
On 7 January 1764, he was elevated to Imperial Prince by Emperor Francis I.
Princess Helene of Hohenlohe-Langenburg
Princess Helene of Hohenlohe- Langenburg( 22 November 1807, Langenburg, Principality of Hohenlohe- Langenburg- 5 September 1880, Schleiz, Thuringia) was a member of the House of Hohenlohe- Langenburg and a Princess of Hohenlohe- Langenburg by birth and a member of the House of Württemberg and a Duchess of Württemberg as the second wife of Duke Eugen of Württemberg

Question: Who is the maternal grandfather of Philip Ernest, Count Of Hohenlohe-Langenburg?
Answer: William I, Count of Nassau-Dillenburg