Events explained by Stefan Andreescu in his book, Vlad Tepes (Dracula) between legend and historical facts, 1976:
January 20, 1437: Vlad the Impaler (Ţepeş) is first mentioned in documents by Vlad Dracul (his father) in a chrysobull (official document) given in Târgovişte, alongside his eldest son Mircea.
January 9, 1443: Basarab, son of Dan II, a representative of the Dăneşti family and enemy of the Draculesti family of Vlad the Impaler, was at the Court of Argeş and issuing documents, having replaced Mircea (Vlad the Impaler’s elder brother) as ruler of Wallachia.
January 1458: Matiaş de Hunedoara (Matthias Corvin, son of Joan Hunyadi, also known as the last true crusader) was elevated to the throne of Hungary.
January 1475: Vlad Ţepeş was believed to have fought in Moldova at Podul Înalt alongside Ştefan cel Mare (Vlad’s cousin and Voivode of Moldova), but this hypothesis is contested.
January 1476: King Matthas Corvin besieged the fortress of Šabac near the Danube, with help from Vlad the Impaler.
January 5, 1477: Ştefan cel Mare expressed concern for Vlad’s situation to the Braşovians, requesting news about him.
January 10, 1477: News of Vlad Ţepeş’s tragic death reached the Moldavian princely court.
January 28, 1490: The Slavic version of the “Story of Voivode Dracula” was transcribed for the second time by Efrosin.
January 21, 1506: Wallachian chancery documents begin to mention Vlad Ţepeş as “Vlad voivode called Ţepeş (the Impaler)”.