Physician Stadhoudersplantsoen Pompe van Meerdervoort was originally from a country that had a different name between 1815 and 1830. Leonard du Bus de Gisignies was a politician in this country when it had a differenet name.
Johannes Lijdius Catharinus Pompe van Meerdervoort (5 May 1829, Bruges  7 October 1908, Brussels) was a Dutch physician based at Nagasaki, in Bakumatsu period Japan. 
The United Kingdom of the Netherlands (Dutch: "Verenigd Koninkrijk der Nederlanden" , French: "Royaume uni des Pays-Bas" ) is the unofficial name given to the Kingdom of the Netherlands as it existed between 1815 and 1830. 
Leonard Pierre Joseph, Viscount du Bus de Gisignies (Mouscron (Hainaut), 1 March 1770  Oostmalle, 31 May 1849) was a soldier and politician in the United Kingdom of the Netherlands. 
