Prince Friedrich of Hesse and by Rhine (b. 1870)

Prince Friedrich Wilhelm August Victor Leopold Ludwig of Hesse and by Rhine (7 October 1870 – 29 May 1873) was the haemophiliac second son of Louis IV, Grand Duke of Hesse, and Princess Alice of the United Kingdom, one of the daughters of Queen Victoria. He was also a maternal great-uncle of Prince Philip, Duke of Edinburgh, through his eldest sister Princess Victoria of Hesse and by Rhine.