What was the noble family that XXX was from?
Ernest Constantine, Landgrave of Hesse-Philippsthal
Ernest Constantine, Landgrave of Hesse-Philippsthal (8 August 1771 in Philippsthal -- 25 December 1849 in Meiningen) was a member of the House of Hesse and Landgrave of Hesse-Philippsthal from 1816 until his death.
House of Hesse