Euphemia Piast of Kuyavia was born circa 1266 to Casimir I of Kuyavia (c1212-1267) and Euphrosyne of Opole (c1229-1292) and died 18 March 1308 of unspecified causes. She married Yuri I Lvovich of Halych (c1255-1308) . Alfred the Great (849-899)/s, Charlemagne (747-814)/s, Rollo of Normandy (860-932)/s.
|Offspring of Euphemia and Yuri I Lvovich of Halych (c1255-1308)|
|Andrei Yuryevich of Halych (c1290-1323)||1290||1323|
|Lev Yuryevich of Halych (c1291-1323)||1291||1323||Olga Romanovna of Bryansk (c1294-c1350)|
|Maria Yuryevna of Halych (c1292-1341)||1292||11 January 1341||Trojden I of Masovia (c1285-1341)|
|Anastasia Yuryevna of Halych (c1293-c1364)||1293||1364||Aleksandr Mikhailovich of Tver (1301-1339)|