Слобожанщина
Jagoldai (Tatar Turkic: Cağolday, "Cağalday", , ) (pronounce: yah-gohl-DAI or jah-ghahl-DAY) – little Tatar Turkic tyumen (duchy) in today Kursk Oblast and Belgorod Oblast of Russia as well as the Sloboda Ukraine, vassal of the Grand Duchy of Lithuania in 15th-16th century.