Irene Doukaina of Nicaea

• https://en.wikipedia.org/wiki/Irene_Doukaina_Laskarina

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-http://fmg.ac/Projects/MedLands/NIKAIA.htm#EireneLaskarinadied1269

a) EIRENE Laskarina (-[1269]). Georgius Akropolites records that Emperor Ioannes proposed a marriage between "neptem, primam filiam filii sui imperatoris Theodori, Irenem" and "Michaeli Comneno" (referring to Mikhael Palaeologus, the future Emperor Mikhael VIII), commenting that "quæ ipsi Michaelis secundi consobrini sui filia erat", dated to the early 1250s from the context of the passage[166]. Georgius Akropolites records the marriage of "Toechi filium Constantinum" and "imperatorem Theodorum…filiam suam maiorem…Irene"[167]. Ephræmius records the marriage of "Irene filia Cæsaris natu maior" and "Constantino…Ticho"[168]. Tsar Konstantin arranged his marriage to Eirene, as the granddaughter of Tsar Ivan Asen II, to boost his claim to the Bulgarian throne. After the coup engineered by Mikhail Palaiologos against her brother Emperor Ioannes in late 1258, Eirene urged her husband to attack the territories under the rule of Palaiologos but no such attack took place[169].

m (early 1258) as his second wife, KONSTANTIN Tih Tsar of the Bulgarians, son of TICH [Toichos], boyar in Skopje & his wife --- of Serbia (-killed in battle Autumn 1277).