Reinier d'Ozy

[2] After first having spent some years at the office of his cousin, the Leiden civil-law notary JP Klinkenberg Dozy, d'Ozy accompanied his elder brother Roelof Jacobus in 1791 to China, where he did up the experience that qualified him to be a secretary of the embassy of Isaac Titsingh, Andreas Everardus van Braam Houckgeest, and Chrétien-Louis-Joseph de Guignes to the court of the Qianlong Emperor in 1794–1795.

[4] In 1804 Janssens entrusted d'Ozy with a confidential mission regarding the colony to the govenmnent of the Batavian Republic at The Hague, which he fulfilled wo the satisfaction of the Asiatic Council of the Staatsbewind and Grand Pensionary Rutger Jan Schimmelpenninck.

King Louis Bonaparte offered him a position at the departmental government of Maasland[d] in June, 1807, and made him head of the Department of the Navy and Colonies in August, 1808.

[4] After the French had left in 1813 and the independence of the Netherlands had been restored he was appointed secretary of the Commissioners-General of the Dutch East Indies on 18 December 1814, and left with them aboard the squadron of Rear-Admiral Arnold Adriaan Buyskes on 30 October 1815, for the East Indies, where they were to take over the colony from the British under the terms of the Anglo-Dutch Treaty of 1814.

He worked diligently as the right hand of Commissioners-General Godert van der Capellen and Cornelis Theodorus Elout and in 1818 he was made their secretary-general.