 This service gained even more importance during the period of the United Kingdom of the Netherlands.In late 1814, Pierre Jean L’Ortye was appointed as “secrétaire archiviste” of the National Archives of Brussels and charged with the supervision of the conservation and management of the archives produced by the public bodies.In 1831, Louis Prosper Gachard, his deputy since 1826, succeeded him and became the first true National Archivist of the Kingdom.