Marquis Yi of Cai

Marquis Yi of Cai (蔡夷侯) (died 809 BC), birth nomen unknown ( his name is lost to history), was the seventh ruler of the State of Cai from 837 BC to 809 BC. He was the only known son of Marquis Wu of Cai (蔡武侯). His reign lasted for 28 years like his father's. He was succeeded by his son.