Willhelm II of Holy Germania also known as Willhelm the Great (Prince William Fredrick von Albert Victor of Prussia before assuming throne) (27 January 1859 – 4 June 1941), ruled both the Holy Germanian Empire and the Kingdom of Prussia (Holy Germania) from 15 June 1888 to his death, leading his country on the Allied side through World War I and the first two and a half years of World War II.