Princess Victoria Louise Adelaide Matilda Charlotte of Prussia (German: Viktoria Luise Adelheid Mathilde Charlotte; 13 September 1892 – 11 December 1980) was the only daughter and the last child of German Emperor Wilhelm II and Augusta Victoria of Schleswig-Holstein. She was a great-granddaughter of Queen Victoria through her father. Her 1913 wedding to Prince Ernest Augustus of Hanover was the largest gathering of reigning monarchs in Germany since German unification in 1871, and one of the last great social events of European royalty before the First World War began fourteen months later.