This is her brief Wikipedia article: "Princess Eleonore of Solms-Hohensolms-Lich (17 September 1871 – 16 November 1937), was the second wife of Ernst-Ludwig, Grand Duke of Hesse and by Rhine and the mother of his two sons.
Family - She was the fourth child and second daughter of Hermann, The Prince of Solms-Hohensolms-Lich, and his wife, Countess Agnes of Stolberg-Wernigerode.
Marriage and issue - Eleanore married Ernest Louis, Grand Duke of Hesse in Darmstadt on 2 February 1905. His first wife was Princess Victoria Melita of Saxe-Coburg and Gotha. They had become estranged and divorced on 21 December 1901, on the grounds of "invincible mutual antipathy" by a special verdict of the Supreme Court of Hesse. Eleanore and Ernest Louis had two sons:
Georg Donatus, Hereditary Grand Duke of Hesse and by Rhine (1906–1937), who married Princess Cecilie of Greece (sister of Prince Philip, Duke of Edinburgh), and had issue.
Prince Louis of Hesse and by Rhine (1908–1968). Married the Hon. Margaret Geddes daughter of Lord Geddes (Baron Geddes), no issue. He adopted Moritz, Landgrave of Hesse as heir.
Death - Eleonore died in an airplane crash on her way to her son Ludwig's wedding in London. Also killed in the crash was her elder son Georg Donatus, Hereditary Grand Duke of Hesse, his wife Princess Cecilie of Greece and Denmark, and their two sons, Ludwig and Alexander."