He is married to Euphemia OF KUYAVIA..
Yuri I of Galicia (born April 24, 1252 (1257?) - March 18, 1308) was prince of Belz (1264-1301) and King of Galicia-Volhynia or King of Rus' (1301-1308).
He was a son of Lev Daniilovich (Knyaz of Galich, 1269-1301) and Constance of Hungary, a daughter of King Béla IV and Maria Laskarina.
He married three times. His first wife was Yaroslavna of Tver (died ca. 1286). His second wife was Euphemia of Kuyavia (died 18 March 1308), daughter of Casimir I of Kuyavia, who in turn was the son of Konrad of Masovia, Kuyavia, Leczyca, and Sieradz.
Mikhail (1283-1286) (first marriage)
Andrew of Galicia, Prince of Galicia-Volhynia (1308-1323)
Lev II, Prince of Lutsk (1308-1323)
Maria, Princess of Halych-Lviv, (died January 11, 1341). Married Trojden I of Masovia
Anastasia (parentage uncertain; died 1364-1365). Married Alexander I of Tver (died 1339)