Léon de la Fontaine
François Joseph Albert Léon de la Fontaine, (18 November 1819 – 5 February 1892), was a Luxembourgish lawyer, politician and botanist. On 21 May 1848 he became a member of the Constituent Assembly, where he replaced Charles Munchen, who was sent to the Frankfurt National Assembly. From 14 December 1866 until 18 June 1867 he was Director General (Minister) of Justice, and initially also of Finance in the Tornaco Ministry. From 1867 he was a member of the "Société des Sciences naturelles" the later scientific section of the "Institut grand-ducal", a founding member of the botanical  society ("Société botanique"). He was particularly interested in ferns. He married Anne Marie Jos. Fr. Collart (1827–1893), the daughter of Charles Joseph Collart (1775–1841), on 27 February 1852. He was the son of Gaspard-Théodore-Ignace de la Fontaine and the brother of Edmond de la Fontaine ("Dicks") and of Alphonse de la Fontaine.