He was born on March 25, 1819, Dion-le-Val, now in Belgium and died on March 7, 1905, Brussels. A stateman who in 1863 helped free Belgium’s maritime commerce by negotiating a settlement of the Scheldt Question, the dispute over Dutch control of the maritime commerce of Antwerp, Belgium’s main port.
After distinguished service in Spain for the army of Queen Isabella II during the First Carlist War (1833-39), Lambermont returned to Belgium in 1842 and entered the foreign affairs ministry, where he remained for 63 years. Seeing the importance of developing Belgium’s trade, he transferred to the commercial branch of the foreign office; in 1856 he began to work on freeing Belgian commerce on the Scheldt River, Antwerp’s only outlet to the sea. His efforts made possible the signing of an international convention at Brussels in July 1863 that ended the remaining Dutch tolls on Antwerp’s maritime trade. For that achievement he was made a baron. He was also prominent between 1874 and 1890 at several international conferences dealing with the laws and customs of war and with Central African affairs.
Reference: The New Encyclopedia Britannica