Nielsen Hayden genealogy
Descendants of Iwan Asen I, Tsar of Bulgaria
![Male](img/tng_male.gif)
Iwan Asen I, Tsar of Bulgaria
(Abt 1150 - 1196)
       
Theodoros II Doukas Laskaris, Emperor of Nicaea
(1222 - Aug 1258)(m. 1235)
![Collapse](img/tng_minus.gif)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
           └─ Eudokia Laskarina
(Abt 1248 Nicaea, Asia Minor - 1311 Zaragoza, Aragón, Spain) =>
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
            + Guillaume Pierre I de Lascaris de Vintimille
(m. Abt 1263)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)