Vlad I of Wallachia supposedly took the throne after the great Ottoman offensive in the fall of 1394, during the Battle of Rovine (dated by several Serbian chronicles to 10 October 1394). However, according to Serbian historian Radoslav Radojičić, Vlad I actually took the throne on 17 May 1395. This theory has been accepted by Romanian historians such as Anca Iancu. At the end of 1395, Sigismund of Luxembourg mentioned that Vlad I was sovereign of Wallachia, referring to his pro-Ottoman policy. In a document dated 28 May 1396 (Hurmuzaki, I / 2, pp. 374–375), Vlad Voievod gives special privileges to the Polish kingdom, confirming that he had contact with the Polish king.