Background
Alexander was the eldest child of Gustav, Prince of Erbach-Schönberg (1840–1908), and his wife, Princess Marie of Battenberg (1852–1923), daughter of Prince Alexander of Hesse and by Rhine and his morganatic wife Countess Julia Hauke.
Alexander was the eldest child of Gustav, Prince of Erbach-Schönberg (1840–1908), and his wife, Princess Marie of Battenberg (1852–1923), daughter of Prince Alexander of Hesse and by Rhine and his morganatic wife Countess Julia Hauke.
He was a first cousin of: Princess Alice of Battenberg (1885–1969), mother of Prince Philip, Duke of Edinburgh, consort of Queen Elizabeth World War II Alexander Mountbatten, 1st Marquess of Carisbrooke (1886–1960) Queen Victoria Eugenie of Spain (1887–1969), Queen-consort of Alfonso XIII of Spain. Queen Louise of Sweden (1889–1965), Queen-consort of Gustaf VI Adolf of Sweden. George Mountbatten, 2nd Marquess of Milford Haven (1892–1938) Louis Mountbatten, 1st Earl Mountbatten of Burma (1900–1979) 12 September 1872 – 18 August 1903: His Illustrious Highness Count Alexander of Erbach-Schönberg 18 August 1903 – 29 January 1908: His Serene Highness Prince Alexander of Erbach-Schönberg 29 January 1908 – 18 October 1944: His Serene Highness The Prince of Erbach-Schönberg.