Uldaegu

Uldaegu is the largest and easternmost of the major kingdoms of Khadoa. It covers most of the region's eastern half (including all of Beraitha and the Split Steel River's basin), controls all the lands around the Fyrdenglin (including Yhendorn’s southern shores), and extends eastward to the Arkanmoors and the frontiers of Um-Gerat. 
Its name means “Homeland of the Daeya” or “Abode of the Daeya” (with a Y-to-G vowel shift common in the Tuvai dialects of Enyrion and Khadoa), from the archaic Tuvai root "uldh-" (abode, dwelling place) and the name of the Daeya people who make up most of Khadoa’s population. The kingdom was founded several centuries ago via the conquest and agglomeration of multiple smaller east Khadoan states, and the name “Uldaegu” was invented to signify the ambition of eventually bringing all the lands of the Daeya people (i.e. all of Enyrion and Khadoa, as well as perhaps western Um-Gerat) under a single huge kingdom; this goal has not been born out, however.