Career
He was the son of Roman I of Moldavia (1391–1394) and an unknown wife, possibly of Lithuanian extraction from descendants of Karijotas. Because of similar name and background, Iuga is sometimes confused with Yuri, son of Karijotas. The nickname "the Crippled" can be found only in the chronicle of Putna Monastery, drafted in the first years of the 16th century, but its origins are unknown.