Question: Between 1815 and 1830 what was the name of the country physician Johannes Lijdius Catharinus Pompe van Meerdervoort  was originally from?
Sentence (from "United Kingdom of the Netherlands"): 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.
Relevant evidence: Yes