The Kingdom of Ely was a medieval kingdom located in what is now eastern England. It emerged in the 7th century and was known for its rich agricultural land and strategic position along the River Ouse. The kingdom was a center of Christianity, with the establishment of the famous Ely Cathedral as a significant religious site. Ely was ruled by several notable kings, including King Æthelwald and King Ealdwynn. The kingdom played a crucial role in the political landscape of early England, often interacting with neighboring kingdoms like Mercia and East Anglia. Its independence lasted until the late 9th century when it became part of the larger Kingdom of England.