[1] His father was the Logothete Ștefan Catargiu (1789-1866), a member of the Three-headed Kaymakam from the Principality of Moldavia (1857 - October 20, 1858), and his mother was Ruxandra Calimachi (1808-1892), who insisted that he bear the name of the great family from which she came.
[2] He had three brothers, Alexandru Catargiu, and from his mother's second marriage to Prince Alecu Rosetti-Roznovanu (1798-1853)): He studied at the University of Iași and, from 1857, in Paris.
Racoviță, Aristid Pascal opposed to the draft of the Constitution issued by the government, which concerned individual rights and freedoms.
The reason for the end of the mission was the irritation of the British government due to the disclosure of some secrets of the Romanian Ministry of Foreign Affairs by M. Callimaki Catargi, materialized by the unauthorized publication of fragments of diplomatic correspondence between Romania and other powers, which harmed Austria's interests revealing[4] the objectives and policy pursued by Brătianu regarding the Danube issue.
[5] The publication of diplomatic telegrams by Nicolae Calimachi-Catargiu was followed by an interpellation both in the Romanian Senate and in the Chamber of Deputies, requesting his sending to court according to art.