Dorothea of Denmark, Duchess of Prussia
Dorothea of Denmark (1 August 1504 – 11 April 1547), was a Duchess of Prussia by marriage to Duke Albert, Duke of Prussia.
She was the daughter of King Frederick I of Denmark and Anna of Brandenburg.
Duchess Anna of Prussia
Duchess Anna of Prussia and Jülich-Cleves-Berg (3 July 1576 – 30 August 1625) was Electress consort of Brandenburg and Duchess consort of Prussia by marriage to John Sigismund, Elector of Brandenburg.
She was the daughter of Albert Frederick, Duke of Prussia, and Marie Eleonore of Cleves.
John Sigismund, Elector of Brandenburg
John Sigismund (8 November 1572 – 23 December 1619) was a Prince-elector of the Margraviate of Brandenburg from the House of Hohenzollern.
He became the Duke of Prussia through his marriage to Duchess Anna, the eldest daughter of Duke Albert Frederick of Prussia who died without sons.
Their marriage resulted in the creation of Brandenburg-Prussia.
Princess Elisabeth of Prussia
Princess Elisabeth of Prussia( 18 June 1815 – 21 March 1885) was the second daughter of Prince Wilhelm of Prussia and Landgravine Marie Anna of Hesse- Homburg and a granddaughter of Frederick William II of Prussia.
Prince Philip, Duke of Edinburgh is her great- great- grandson.
Marie Eleonore of Cleves
Duchess Marie Eleonore of Cleves (16 June 1550 – 1 June 1608) was a Duchess consort of Prussia by marriage to Albert Frederick, Duke of Prussia.
She was the eldest child of William, Duke of Jülich-Cleves-Berg and Maria of Austria.
Princess Elisabeth Anna of Prussia
Princess Elisabeth Anna of Prussia (8 February 1857 – 28 August 1895) was a German princess.
She was the second child of Prince Frederick Charles of Prussia and Princess Maria Anna of Anhalt-Dessau.
The Elisabeth-Anna-Palais was named in her honor after her early death in 1895.
Henry Krause
Henry J." Red" Krause, Jr.( August 28, 1913 – February 20, 1987) was an American football offensive lineman in the National Football League for the Brooklyn Dodgers and the Washington Redskins.
He played college football at St. Louis University.
He is the grandfather of Jennifer Krause
He is the great grandfather of Payton Hoeing
Princess Louise of Prussia (1829–1901)
Marie" Louise" Anna of Prussia( 1 March 1829, Berlin – 10 May 1901, Frankfurt am Main) was a Prussian princess of the House of Hohenzollern.
Frederick Augustus II, Grand Duke of Oldenburg
Frederick Augustus II( 16 November 1852 in Oldenburg – 24 February 1931 in Rastede) was the last ruling Grand Duke of Oldenburg.
He married Princess Elisabeth Anna of Prussia, daughter of Princess Maria Anna of Anhalt- Dessau and Prince Frederick Charles of Prussia.
After her death, he married Elisabeth Alexandrine of Mecklenburg- Schwerin.
Princess Charlotte of Prussia (1831–1855)
Princess Charlotte of Prussia( 21 June 1831 – 30 March 1855), was by birth a Princess of Prussia and member of the House of Hohenzollern and by marriage Hereditary Princess of Saxe- Meiningen.
She was the eldest child and daughter of Prince Albert of Prussia( younger son of Frederick William III of Prussia and Louise of Mecklenburg- Strelitz) and his first wife Princess Marianne of the Netherlands( daughter of William I of the Netherlands and Wilhelmine of Prussia).

Question: Who is Duchess Anna Of Prussia's maternal grandfather?