The Duchy of Eastshare was a Chisholmian patent of nobility.
It made its holder the ruler of a large area on the eastern coast of the Chisholmian mainland, north of the capital city of Cherayth. (map)
In the Year of God 894, the reigning Duke of Eastshare was Ruhsyl Thairis, the commanding officer of the Imperial Charisian Army. (HFAF, MTAT)