Friedrich Wilhelm, Prince of Wied
Friedrich Wilhelm, Prince of Wied( 2 June 193128 August 2000) was the son of Hereditary Prince Hermann of Wied and Countess Marie Antonia of Stolberg- Wernigerode; and grandson of William Frederick, 6th Prince of Wied.
He was the titular Prince of Wied from 1945 until his death.
Hermann, Prince of Wied
Hermann, Prince of Wied (22 May 18145 March 1864) was a German nobleman, elder son of Johann August Karl, Prince of Wied.
He was the father of Queen Elisabeth of Romania and grandfather of William, Prince of Albania.
William, Prince of Wied
William V, Prince of Wied (22 August 184522 October 1907) was a German officer and politician, elder son of Hermann, Prince of Wied.
He was the father of William, Prince of Albania and brother of Queen Elisabeth of Romania.
William Frederick, Prince of Wied
William Frederick, Prince of Wied( 27 June 187218 June 1945) was a German nobleman, eldest child of William, Prince of Wied.
He was an elder brother of William, Prince of Albania.
Carl, Prince of Wied
Carl, Prince of Wied( 27 October 1961 – 12 March 2015) was the second son of Frederick William, 7th Prince of Wied( 1931 – 2000).
In 2000, he succeeded his father and became the titular 8th Prince of Wied.
Princess Isabelle of Isenburg
Princess Isabelle of Wied( born 1973) previously Princess of Isenburg is third child and second daughter of Franz Alexander, Prince of Isenburg, head of the mediatized House of Isenburg and his wife, Countess Christine von Saurma- Jelltsch.
By marriage Princess Isabelle was the wife of the Head of the House of Wied- Neuwied.
Once widowed that position went to her eldest son Maximilian, 9th Prince of Wied.
Emich, 5th Prince of Leiningen
Emich, 5th Prince of Leiningen( 18 January 1866 – 18 July 1939) was the son of Ernst Leopold, 4th Prince of Leiningen.
He was 5th Prince of Leiningen from 1904 to 1918, and afterwards titular Prince of Leiningen from 1918 until his death.
Johann Friedrich Alexander, Prince of Wied
Johann Friedrich Alexander of Weid( November 18, 1706- August 7, 1791) was a German ruler.
He was the son of Friedrich Wilhelm of Wied and Luise Charlotte Dohna-Schlobitten.
He was Count of Wied- Neuwied from September 17, 1737 to May 29, 1784, when he was elevated to Prince and continued to rule in that capacity until his death on August 8, 1791.
He was married to Karoline von Kirchburg.
They had three children Frederich Karl of Wied, who succeeded him as Prince, Alexander August of Wied and Sophie Karoline of Wied.
Karl, Prince of Leiningen
Karl, Prince of Leiningen( 13 February 18982 August 1946) was the son of Emich, 5th Prince of Leiningen.
He was the 6th Prince of Leiningen from 1939 until his death.
Princess Marie of the Netherlands
Princess Marie of the Netherlands( 5 June 184122 June 1910) was the fourth child and younger daughter of Prince Frederick of the Netherlands and wife of William, 5th Prince of Wied.
She was the mother of William, Prince of Albania.
She was the last surviving grandchild of William I of the Netherlands.

Question: Who is William, Prince Of Wied's paternal grandfather?