The three reigns of Alexander Ypsilanti (two in Wallachia: 1774 to 1782 and from 1796 to 1797, and one in Moldova: 1787-1788) comprise nearly 10 years, within a period of deep economic and social changes of the last quarter of the 18th century. About the Phanariot prince Alexander Ypsilanti, who reformed the school, the monasteries, the economic life etc. has been written that he was “one of the most important” among Phanariot reigns (C.C. Giurescu), being characterized as one of “the most outstanding figures of Phanariot epoch” (A.D. Xenopol), who “deserves to be placed among the best of our rulers in the eighteenth century, if not even in front of them” (Nicolae Iorga), as he was “one of the few phanariotes, who wanted to be not only a despot, but also an enlightener” (V. Georgescu). Among the reigns of Alexandru Ioan Ypsilanti (ca. 1724-1736? - beheaded at 13/01/1807) stands out the first one in Wallachia (1774-1782) – the longest and the most productive, but which ended because of a escapade of his sons – Constantine and Demetrius, who fled from Bucharest to Hapsburg Austria. Later, at the beginning of the Russo-Austrian-Turkish war of 1787-1791, Prince Al. Ypsilanti fled himself to the Habsburg Empire, living for 3 years and 3 months in Brno (Brun), in Moravia. The political adventure of the “imprisonment” of Al. Ypsilanti, making enough fuss in the West, lasted as long as the Russian-Austrian-Turkish war continued. M. Kogalniceanu considered that Al. Ypsilanti was a Habsburg spy. We can ascertain that the relations this family maintained with the Habsburg Empire were quite significant and constant