Tomasina Morosini, queen mother of Hungary, duchess of Slavonia

Please note that there were two Tomasina Morosini's 

1. This daughter of Michele Sbarra Morosini, married Istvan of Hungary.
2. Her niece Tomasina married Pietro Gradenigo, Doge of Venice.

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• http://en.wikipedia.org/wiki/Tomasina_Morosini

Tomasina Morosini (Venice, ca. 1250 – Óbuda, 1300) Queen Mother of Hungary, mother of Andrew III the Venetian King of Hungary.

Life

She was the daughter of Michele Sbarra Morosini Patrician of Venice. In 1263 she married Stephen the Posthumous Prince of Hungary (1236-1271) in Venice, who lived in exile in Venice. His paternity was disputed by his brothers born from their father's earlier marriage and he was not recognized as presumptive heir to the Hungarian throne. Tomasina gave birth to a son who was named after his grandfather, Andrew II. She supported his son's claim to the Hungarian throne. After the death of King Ladislaus IV Prince Andrew succeeded to gain the kingdom and he was crowned King of Hungary in the name of Andrew III in 1290. He called his mother to Hungary and appointed her Princess of Slavonia and gave her the title "Queen Mother". Allegedly she was poisoned in 1300, shortly before his son's death who was rumoured that he was poisoned, too in January 14, 1301. His son was the last king of the House of Arpad.

-http://fmg.ac/Projects/MedLands/VENICE.htm#TomasinaMorosinidied1300
3. MICHELE Sbarra Morosini . Patrician of Venice. m ---. The name of Michele´s wife is not known. Michele & his wife had four children:

• a) CONSTANZA Morosini . m ([24 Aug 1293]) as his first wife, VLADISLAV of Serbia, son of STEFAN DRAGUTIN King of Serbia & his wife Katalin of Hungary (-in Hungary after 1326).
• b) TOMASINA Morosini (-end 1300). Giovanni di Musso´s Chronicon Placentinum records that "Andreæ Regi Hungariæ…filium…Stephanum" married secondly "Thomaxinam sororem Albertini Moresini"[233]. The Chronicon Dubnicense records that "Stephanus" fled Ravenna for Venice where he married "vir quidam civis Venetensis civitatis…filiam"[234]. The continuator of Andrea Dandulo´s Chronicon Venetum records the coronation of "juvenis Andreaxius de regno Hungarico" in Aug 1290, his mother being "Thomasina sorore domini Albertini Mauroceno civis Veneti", explaining that "Andreaxius filius Stephani…Rex Hungariæ" after whose death "Regina uxor eius…Azonis marchionis Ferrariæ soror" gave birth to a posthumous child "Stephanum antedictum" who went to Venice and married "dicta Thomasina Mauroceno"[235]. m ([1265/70]) as his second wife, ISTVÁN of Hungary Duke of Slavonia, son of ANDRÁS II King of Hungary & his third wife Beatrice d'Este (posthumously 1236-1271 shortly after 10 Apr).
• c) ALBERTO Morosini (-after 1290). The marriage contract between "Dominum Albertum comitem Goricie…filiam suam dominam Claram" and "domino Andrea…duce Sclavonie nepote olim…domini Andree regis Hungarie" is dated 6 Jun 1286, and names "dominum Albertinum Mauroceno de Venecia…avunculus eiusdem domini ducis"[236]. The continuator of Andrea Dandulo´s Chronicon Venetum records that "juvenis Andreaxius de regno Hungarico" appointed "Albertinum Mauroceno avunculum eius" as "Banum et Ducem Sclavoniæ" after his coronation in 1290[237].
• d) --- Morosini. m ---. One child:
  • i) TOMASINA Morosini . The primary source which confirms her parentage and marriage has not yet been identified. m PIETRO Gradenigo Doge of Venice, son of --- (-1311).