*Maria Laskarina Princess of Byzantine Empire
born about 1206 Nicaea, Bursa, Byzantium
died 1270

father:
*Theodoros I Lascarina Emperor of Byzantium
born about 1175 Nicaea, Bursa, Byzantium
died August 1222

mother:
*Anna Komnene Angelina Empress of Byzantium
born about 1190 Constantinople, Byzantium

siblings:
Konstantinos Laskaris born 1214 Nicaea, Bursa, Bythnia died after 1249
Irene Lascaris

spouse:
*Bela IV King of Hungary
born November 1206 Esztergom, Komarom-Esztergom, Hungary
died 3 May 1270

children:
Kunigunda Princess of Hungary born 1224 Buda, Pest, Hungary died 24 July 1292
Margit Princess of Hungary born about 1226 Buda, Pest, Hungary died 1242
Anna Princess of Hungary born about 1227 Buda, Pest, Hungary died 1274
Katalin Princess of Hungary born about 1229 Buda, Pest, Hungary died 1242
Erzsebet Princess of Hungary born about 1226 Buda, Pest, Hungary died 24/25 October 1271
Konstancia Princess of Hungary born about 1237 Buda, Pest, Hungary
Ilona Princess of Hungary born about 1238 Buda, Pest, Hungary died 6 March 1297/98
*Istvan V King of Hungary born about 1240 Buda, Pest, Hungary
died 1 August 1272 Buda, Pest, Hungary
Margit Princess of Hungary born 1242 Buda, Pest, Hungary died 18 January 1270/71
Bela Prince of Hungary born about 1243 Buda, Pest, Hungary died 1269
Szabina Princess of Hungary born about 1245 Buda, Pest, Hungary

biographical and/or anecdotal:

notes or source:
LDS
ancestry.com