Gertrude von Hanau (1803-1882), was a German noble. She was the morganatic spouse of Frederick William, Elector of Hesse.
They had nine children, some born before marriage, who were also made princes (Prinzen) of Hanau, and granted the style of Serene Highness in 1862. Subsequently, the Prince-elector divorced Gertrud.
Augusta Marie Gertrude (1829–1887), married 1849 Ferdinand Maximilian III Prince (Fürst) zu Isenburg-Büdingen in Wächtersbach (1824–1903). They were the grandparents of Princess Sophie of Saxe-Weimar-Eisenach.
Alexandrine (1830–1871), married 1851 Prince Felix zu Hohenlohe-Oehringen (1818–1900)
Frederich Wilhelm (1832–1889), married morganatically twice: 1856 Auguste Birnbaum; and in 1875, Ludowika Gloede; their children were Counts von Schaumburg, but post-1918 descendants bear the title Prince/ss von Hanau.
Moritz (1834–1889), married morganatically 1875 Anne von Lossberg; no children
Wilhelm (1836–1902), married 1stly 1868 (divorced 1870) Princess Elisabeth, daughter of George William, Prince of Schaumburg-Lippe; 2ndly 1890 Countess Elisabeth zur Lippe-Weissenfeld (1868–1952); no children
Maria (1839–1917), married 1857 (divorced 1872) Prince William of Hesse-Philippsthal-Barchfeld (1831–1890): she and her children were granted the titles HSH Prince/ss of Ardeck after her divorce.
Karl (1840–1905), married 1882 Countess Hermine Grote; no children.
Heinrich (1842–1917), married morganatically Martha Riegel
Philipp (1844–1914), married morganatically Albertine Hubatschek-Stauber; countly descendants, but post-monarchy bear the princely Hanau title.
