On 5 August 1733, Oertz was married to Marie Svane (1698–1772), daughter and only child of former Master of the Royal Hunt Frederik Hansen Svane (1662–1730), a son of Hans Svane and the owner of Svenstrup Manor. Fourteen years Oertz's senior, Marie was previously married to Colonel Jesper Friis (1673–1716), head of the Funen Regiment. In the same year, now with the title of chamberlain, Oertz was elevated to count. The marriage was unhappy, and after just a few years entered bitter divorce proceedings that would last for the next 15 years. In 1744, a Supreme Court ruling ordered them to live together. In 1751, through the involvement of Christian VI (1699–1746) and bishop Hersleb, their marriage was finally dissolved. In the same year, Svenstrup was sold to Peter Johansen Neergaard.[2]
In 1747, Oertz was created a Knight of the Order of the Dannebrog. On 25 April 1752, he married a second time to Sofie Amalie, countess Brockdorff (1728–1785). She was the daughter of Geheimrat Christian Frederik Brockdorff of Klethkamp and Ulrica Eleonore von Fölkersam. In 1761, he and his second wife were awarded the Ordre de l'Union Parfaite'. Oertz died on 28 September 1779.[1]
