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Illubabor (Amharic: ኢሉባቦር) was a province in the south-western part of Ethiopia, along the border with Sudan. The name Illubabor is said to come from two Oromo words, "Illu" and "Abba Bor(a)". "Illu" is a name of a clan, and "Abba Bor" was the horse name of , who founded the ruling family of the area when it was conquered by Shewa; hence IlluAbabor means the Illu belonging to Ababor(a).