Where is the origin of Deng?

Deng Houman's surname is Deng Gong, a noble of Chu. The man surnamed Deng Guo died in 688 BC. Deng Hou and Deng Gong are definitely not the same surname. The biggest source of Deng's surname is Chu people who live in Deng County of Chu State, including Deng County as their birthplace in the middle and late Warring States period, Baipu and Yue.