Neacșu's letter

16th century Romanian-language warning letter

Neacșu's letter, written in 1521, is the oldest surviving document available in Old Romanian that can be reliably dated. Written using Cyrillic, it was sent by Lupu Neacșu, a merchant from Câmpulung, Wallachia to Johannes Benkner, the mayor of Brassó, Kingdom of Hungary, warning him about the imminent attack of the Ottoman Empire on the city of Belgrad and its implications to regional politics.

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