Tomasina Morosini

Tomasina Morosini (c. 1250–c. 1297) was a Venetian noblewoman of the powerful Morosini family. Around 1264 she married Stephen the Posthumous, an exiled Árpád prince claiming the Hungarian throne, bringing him Venetian wealth and backing. Their only son, the future Andrew III, was born around 1265. Stephen died in 1271, having named Tomasina's relatives as Andrew's guardians.

She remained in Venice, but when Andrew became King of Hungary she followed him in 1292 and ruled as Duchess of Slavonia. She died in 1296 or early 1297, amid rumours of poison; her son was the last Árpád king.