Maria of Galicia (also Mary) (before 1293- 11 January 1341) was a princess of Galicia-Volhynia and a member of the Rurik Dynasty.[1][2] She was sister to Leo II of Halych and Andrew of Halych, daughter of Yuri I of Galicia and his second wife, Euphemia of Kuyavia (d. 1308).[3] She assisted her son king Boleslaus George II of Halych in ruling Galicia.[1]
In 1323 her brothers Andrew of Galicia and Volynia and Lev II of Lutsk were killed, and she and her niece, Eufemia, Heiress of Volynia-Lutsk, inherited the lands. Her grandfather, Leo of Halych, had been king of Galicia 1269-1301 and he moved his capital from Galich (Halicz) to the newly founded city of Lviv (Lwow, Lemberg). She lived (before -1293-1341)
Her mother, Euphemia of Kuyavia, was the daughter of Casimir I of Kuyavia. Before 1310, she married Duke Trojden I of Masovia with whom she had four children: