Stefan Lazarević

-https://en.wikipedia.org/wiki/Stefan_Lazarevi%C4%87

-http://fmg.ac/Projects/MedLands/SERBIA.htm#StefanLazarevicdied1427

4. STEFAN Lazarević ([1372/77]-Glava 19 Jul 1427). The Historia Byzantina of Michælis Ducæ Nepotis names "Lazari…filius Stephanus" when recording his military campaign against Sultan Bayezid I[363]. His birth date range is estimated on his having reached the age of majority in 1393. He succeeded his father in 1389 as Prince of Serbia, under the regency of his mother. King Sigismund of Hungary immediately attacked northern Serbia, hoping to take advantage of Serbian weakness after the battle of Kosovo. Fearing further incursions by Hungary in her own territories to the north, Regent Milica submitted to the suzerainty of the Ottomans whose armies had advanced to Serbia's border in summer 1390[364]. He acquired the bulk of the lands of Vuk Branković in Kosovo after the latter was expelled by the Ottomans in [1395][365]. “Eugenia monacha cum filiis knez Stephano et fratre eius Vlk” issued a charter relating to “monasterii Russorum” dated 8 Jun 1395[366]. He appears to have remained loyal to Sultan Bayezid I, avoiding the annexation of Serbia by the Ottomans, and fought with him against Timur Khan at the battle of Ankara 1402. Ruy Gonzalez de Clavijo records that "the son of this Lazaro marched with Bayazid, and he now lives with Muzulman Chalabi, the son of this Ilderim Bayazid"[367]. Stopping in Constantinople on his return, Emperor Manuel II granted him the title Despot in 1402[368]. He defeated the forces of his nephew Djuradj Vuković in Nov 1402 at Tripolje. Seeking allies in case the war with his nephew broke out again, he accepted Hungarian suzerainty in [1403] in return for being granted Mačva, after which he installed himself at Beograd as his capital[369]. “Stephanus, Serborum despotes, cum matre Milica et fratre Vlk” donated property to “monasterio Chilandar” by charter dated to [1403/05][370]. After supporting Sultan Suleiman I in his succession struggle against his brothers, Stefan Lazarević defected to join Suleiman's brother Musa in 1409, whereupon Suleiman supported a rebellion in Serbia by Stefan's brother Vuk[371]. Stefan rejoined Suleiman shortly before the latter's defeat, and in revenge was attacked by Musa in 1411 whereupon he sought further support from Hungary which granted him Srebrnica, recently captured from Bosnia by Hungary[372]. He also made peace with Djuradj Vuković, forming a Slavic coalition which defeated Musa near Vitoša on the upper Iskar in Jul 1413[373]. He inherited Zeta on the death of Balša III Balšić in 1421, but was forestalled by Venice, which defeated Serb forces at Skadar in Dec 1422. Venice's territorial boundaries were recognised by treaty negotiated in 1426, under which Serbia's claim to most of Zeta was recognised[374]. Before his death he obtained recognition of Djuradj Branković as his successor in May 1426 from Sigismund King of Hungary (who insisted on the return of Mačva, including Beograd, to Hungary as a condition) and from a council of nobility held at Srebrnica in Jul 1426[375].

m (Galata 1405) HELENA Gattilusio, daughter of FRANCESCO Gattilusio Lord of Lesbos & his wife ---. The primary source which confirms her parentage and marriage has not yet been identified.