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.
Augusta Victoria of Hohenzollern
Princess Augusta Victoria of Hohenzollern( 19 August 1890 – 29 August 1966) was the daughter of William, Prince of Hohenzollern and Princess Maria Teresa of Bourbon- Two Sicilies.
In 1913, she married the deposed King Manuel II of Portugal.
After his death, Augusta Victoria married a second time.
She had no children from either marriage.
Karl Friedrich, Prince of Hohenzollern
Karl Friedrich, Prince of Hohenzollern( born 20 April 1952) is the eldest son of the late Friedrich Wilhelm, Prince of Hohenzollern and Princess Margarita of Leiningen.
He became head of the Princely House of Hohenzollern, the Roman Catholic Swabian branch of the dynasty, upon his father's death on 16 September 2010.
Friedrich Wilhelm, Prince of Hohenzollern
Friedrich Wilhelm, Prince of Hohenzollern( 3 February 1924 – 16 September 2010) was the head of the Princely House of Hohenzollern for over 45 years.
Prince Karl Anton of Hohenzollern
Prince Karl Anton of Hohenzollern- Sigmaringen( 1 September 1868 – 21 February 1919) was a member of the Princely House of Hohenzollern- Sigmaringen.
Karl Anton was the third and youngest son of Leopold, Prince of Hohenzollern and his wife Infanta Antónia of Portugal.
Karl Anton's elder brothers were William, Prince of Hohenzollern and Ferdinand I of Romania.
William, Prince of Hohenzollern
William, Prince of Hohenzollern  (7 March 1864 in Schloss Benrath, near Düsseldorf – 22 October 1927 in Sigmaringen) was the eldest son of Leopold, Prince of Hohenzollern and Infanta Antónia of Portugal.
William was an older brother of Ferdinand of Romania.
His maternal first cousins included (among others)
Carlos I of Portugal, Infante Afonso, Duke of Porto, Frederick Augustus III of Saxony, and Princess Maria Josepha of Saxony.
Between 1880 and 1886, William was heir presumptive to the Romanian throne.
On 20 December 1886, he renounced his rights to the throne in favor of his brother Ferdinand.
Frederick, Prince of Hohenzollern
Frederick, Prince of Hohenzollern( 30 August 1891 in Heiligendamm, Mecklenburg- Schwerin – 6 February 1965 in Krauchenwies, Baden- Württemberg, Germany) was the eldest son of William, Prince of Hohenzollern and Princess Maria Teresa of Bourbon- Two Sicilies.
He had a twin brother, Franz Joseph, Prince of Hohenzollern- Emden, who was born a few minutes after he was.
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.
Infanta Antónia of Portugal
Infanta Antónia of Portugal (or of Braganza; ; "Antónia María Fernanda Micaela Gabriela Rafaela Francisca de Assis
Ana Gonzaga
Silvéria Júlia Augusta de Saxe-Coburgo e Bragança"; 17 February 1845 – 27 December 1913) was a Portuguese "infanta" (princess) of the House of Braganza, daughter of Queen Maria II of Portugal and her King consort Ferdinand II of Portugal.
Through her father, she also held the titles of Princess of Saxe-Coburg and Gotha and Duchess of Saxony.
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 Hohenzollern's maternal grandmother?
Answer: Maria II of Portugal