From 1858 he spent the next ten years at his wife's manor in Pühajärve (Heiligensee), Livonia, returning to Dorpat in 1868, where he died several years later.
In Tartu, three Scout troops—the 5th, 6th, and 7th Dorpat Troops—were formed completely or primarily of Latvian boys from evacuated Riga schools.
In 1224, Estonian bishop Hermann took possession of parts of what is today southeastern Estonia and chose Dorpat as his new seat, 6 November 1225 he was enfeoffed with his principality by Heinrich, King of the Romans, and on 1 December created as a March of the Holy Roman Empire.
Emil Rosenberg, working as professor, from 1876 to 1888, systematized the comparative-anatomy collections of the University of Dorpat in accordance with the system developed at the John Hunter Museum in London.
In 1821, he was professor of physiology and pathology, then in 1826 professor of physics at the University of Dorpat, and in 1828 Parrot undertook another voyage to Kakheti and Armenia.
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On 27 September 1829, Parrot, a pioneer of scientific mountaineering, whilst professor of physics of the University of Dorpat, reached the summit of Mount Ararat (5,137 m) with Khachatur Abovian (the Armenian writer and national public figure) and three other students.
However, he also received and accepted a call to a Chair at the University of Tartu (then Dorpat), the German-language university in the then Russian province of Livonia.
Thence he passed on to Gotha as director of the Seeberg observatory; nor could he be tempted to relinquish the post by successive invitations to replace F.G.W. Struve at Dorpat in 1829, and F.W. Bessel at Königsberg in 1847.