Princess Marie Louise of Schleswig-Holstein
Princess Marie Louise of Schleswig-Holstein (Franziska Josepha Louise Augusta Marie Christina Helena; 12 August 1872 – 8 December 1956) was a granddaughter of Queen Victoria.
Prince Boris of Leiningen
Prince Karl" Boris" Frank Markwart of Leiningen( born 17 April 1960) is the elder son of Prince Karl of Leiningen and of his wife, Princess Marie Louise of Bulgaria.
As a third great- grandson of Queen Victoria, he is in the line of succession to the throne of Canada and those of the other Commonwealth realms.
Princess Marie of Hanover
Princess Marie of Hanover (2 December 1849 – 4 June 1904) was the younger daughter of King George V of Hanover and of his wife, Princess Marie of Saxe-Altenburg.
Princess Louise of Prussia (1808–1870)
Princess Louise of Prussia (1 February 1808 – 6 December 1870) was the third surviving daughter and ninth child of Frederick William III of Prussia and Louise of Mecklenburg-Strelitz.
Prince Ernst August of Hanover (born 1954)
Ernst August, Prince of Hanover( born 26 February 1954), is head of the royal House of Hanover which held the thrones of the United Kingdom until 1901, of the former Kingdom of Hanover until 1866, and of the sovereign Duchy of Brunswick from 1913 to 1918.
As the husband of Princess Caroline of Monaco, he is the brother- in- law of Albert II, Prince of Monaco.
Princess Marie of Croÿ
Princess Marie Élisabeth Louise of Croÿ( 26 November 1875 – 20 June 1968) was a member of the Belgian aristocracy and a member of the Belgian Resistance during two world wars.
Princess Marie Louise of Hanover
Princess Marie Louise of Hanover and Cumberland (11 October 1879 – 31 January 1948) was the eldest child of Ernest Augustus, Crown Prince of Hanover, and Princess Thyra of Denmark, the youngest daughter of Christian IX of Denmark and Louise of Hesse-Kassel.
Through her father, Marie Louise was a great-great-granddaughter of George III of the United Kingdom and Charlotte of Mecklenburg-Strelitz.
She was a first cousin of Nicholas II of Russia and George V of the United Kingdom.
Princess Thyra of Denmark
Princess Thyra of Denmark, , (29 September 1853 – 26 February 1933, in Gmunden) was the youngest daughter and fifth child of Christian IX of Denmark and Louise of Hesse-Kassel.
In 1878, she married Ernest Augustus, the exiled heir to the Kingdom of Hanover.
As the Kingdom of Hanover had been annexed by Prussia in 1866, she spent most of her life in exile with her husband in Austria.
Thyra was the younger sister of Frederik VIII of Denmark, Queen Alexandra of the United Kingdom, George I of Greece, Empress Maria Feodorovna of Russia and an elder sister of Prince Valdemar of Denmark.
Countess Marie von Hochberg
Princess Marie of Hanover( born 26 November 1952 in Pattensen, Lower Saxony, Germany), is the wife of Count Michael von Hochberg.
Princess Alexandra of Hanover (born 1999)
Princess Alexandra of Hanover( Alexandra Charlotte Ulrike Maryam Virginia; born 20 July 1999) is the only child of Princess Caroline of Monaco and Prince Ernst August of the defunct Kingdom of Hanover.

Question: Where was the place of death of Princess Marie Louise Of Hanover's mother?
Answer: Gmunden