The House of Schleswig-Holstein-Sonderburg-Augustenburg was a branch of the dukes of Schleswig-Holstein-Sonderburg of the House of Oldenburg. The line descended from Alexander, Duke of Schleswig-Holst
Duke Ernst Günther I, first Duke of Augustenburg (1609-1689).
Auguste, the first Duchess of Augustenburg (1633-1701).
Albert, Duke of Schleswig-Holstein, was a grandson of Queen Victoria. He was the second son of Victoria's daughter Princess Helena by her husband Prince Christian of Schleswig-Holstein. Prince Albert
House of Schleswig-Holstein-Sonderburg-Augustenburg
…Ernest Günther II (1880–1921), son Albert (1921–1931), cousin Like the kings of the earlier Oldenburg line, of which the House of Glücksburg is a cadet branch, monarchs of the Glücksburg dynasty…
Albert in 1914
Prince Albert (bottom row, second from right) with members of his family in May 1900