Who is the mother of XXX?
Princess Elisabeth of Hesse and by Rhine
Princess Elisabeth of Hesse and by Rhine (Prinzessin Elisabeth Marie Alice Viktoria von Hessen und bei Rhein) ( 11 March 1895 -- 16 November 1903) was the only daughter of Ernst Ludwig, Grand Duke of Hesse and by Rhine and his first wife, Princess Victoria Melita of Saxe-Coburg and Gotha.
Princess Victoria Melita of Saxe-Coburg and Gotha