Background
She was sister to Leo II of Halych and Andrew of Halych, daughter of George I of Halych.
She was sister to Leo II of Halych and Andrew of Halych, daughter of George I of Halych.
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 Lvov (Lwow, Lemberg). She lived (before -1293-1341)
She was the daughter of Yuri I and Euphemia of Kuyavia, who was the daughter of Casimir I of Kuyavia. Euphemia (1310-after 1373) married Casimir I, Duke of Cieszyn and had issue
Boleslaw-Yuri II of Galicia (1308 - April 7, 1340), became King of Halych-Volhynia
Siemowit III of Masovia (before 1314-1316 June 1381), became Duke of Masovia
Casimir (1314-1326 November 1355), Prince of Ciechanów and Warsaw.