Euphemia of Silesia-Liegnitz
Euphemia (c. 1281–1347) was a Piast princess, daughter of Henry V the Fat, Duke of Legnica, and Elisabeth of Greater Poland. In 1297 she married Otto III of the House of Gorizia, who ruled Carinthia and Tyrol jointly with his brothers. They had four daughters, including Anna and Elisabeth.
When Otto died sonless in 1310, his brother Henry inherited Carinthia and Tyrol. Euphemia outlived him by decades and died in 1347.