sevastokrator Alexander Asen

http://genealogy.euweb.cz/balkan/balkan9.html

The house of Aseniden

This family apparently descends from a Wallachian boyar, who had issue a follows:

• A1. Iwan Asen I, he and his brother Peter rebelled against the Byzantines and he became Prince of northern Bulgaria (ca 1187-96), +murdered by his cousin Iwanko-Alexios 1196
  • ...
  • B2. Alexander, +ca 1241; m.N, a dau.of King Stephen Prvovencani of Serbia
    • C1. Kalojan=Koloman II, Tsar of the Bulgarians (1257-58); m.N, a dau.of Rostislaw, Gr Pr of Kiev

http://de.wikipedia.org/wiki/Haus_Assen_(Dynastie)#Stammliste

-http://fmg.ac/Projects/MedLands/BULGARIA.htm#Alexanderdiedbefore1241

2. ALEXANDER (-before 1241). Georgius Akropolites names "Ioannem et Alexandrum" as the two sons of "primus Bulgarorum rex Asanus"[277]. The Chronicle of Alberic de Trois-Fontaines names "Alsanus rex Bulgarie frater Alexandri" specifying that both were "nepotes…Burilli"[278]. Sébastokrator.

m --- of Serbia, daughter of STEFAN "Prvovenčani/the First-Crowned" King [Kralj] of Serbia & his first wife Evdokia Angelina Komnene of Byzantium (before [1201/02][279]-). The primary source which confirms her parentage and marriage has not been identified.

 Alexander & his wife had one child: