The article shows and analyzes the rich Armenological heritage of the famous 19th-century Armenologist Fr. Ghevond Alishan based on the study of his rich Armenological heritage.

It is known that Alishan’s historical-geographical, historical-linguistic and textological views were formed in his works.

Alishan used history the most among the branches of Armenology, because he believed that in order to know humanity, it is necessary to know everything that happened in the ancient, old and recent times. According to him, every nation builds not only the present, but also the future on its past.

Alishan's historical works based on the materials collected from various printed sources, archives, world-famous libraries, and manuscripts of the Mekhitarist Matenadaran continue to be relevant from the point of view of the questions raised, the novelty contained, and the assessment given to this or that phenomenon. From this point of view, his article “Deacon Hovhannes Vardapet” is worth mentioning, as well as his role in connection with the "mystery" of Movses Khorenatsi.

Examining all the collected material from the position of the advanced level of European Armenology of the period, in his articles “Movses Khorenatsi and Armenian History”, “Movses the Armenian Historian” and other articles, Alishan spoke decisively about the purity of Khorenatsi's scientific legacy.