Events explained by Stefan Andreescu in his book, Vlad Tepes (Dracula) between legend and historical facts, 1976:
March 7, 1437: Aeneas Sylvius Piccolomini, later Pope Pius II, wrote about two factions in Wallachia, the Dăneşti and the Drăculeşti families, direct descendants of Basarab I, founder of Wallachia.
March 30, 1452: Iancu of Hunedoara informed the Braşovians that Vlad Ţepeş had left for Moldova.
March 2, 1453: King Ladislau V the Postum ordered the capitulary of Alba Iulia to participate in putting the Saxons in possession of Tălmaciu.
March 24, 1455: Pope Nicholas V died.
March 1456: It was already known that the Sultan would march on Semendria and Belgrade.
March 14, 1457: Vlad Ţepeş sent an epistle to the Sibians, complaining about attempts to arrest him and warning about a pretender to the Wallachian throne (his half brother Vlad Călugărul) in Amlaş.
March 16, 1457: Ladislau, son of Iancu of Hunedoara and brother of Matthias Corvin, was executed.
March 21, 1457: A document from King Ladislau V the Postum of Hungary discussed Iancu of Hunedoara’s influence in Wallachia and Moldova.
March 3, 1458: The court in Buda urged the leaders of Sibiu to cease provocations and make peace with the Wallachian prince, Vlad the Impaler.
March 2, 1460: The pretender Dan (Vlad the Impaler’s cousin), in an act, referred to Vlad as “the unfaithful and very cruel tyrant without faith, that is, Dracul”.
March 2, 1462: Ştefan cel Mare (Stephen the Great), Vlad the Impaler’s cousin from his mother’s side, renewed his vassalage to Poland through two separate acts.
March 23, 1482: Basarab the Younger’s rule is attested, showing he was still alive and ruling.