Deng's surname was Deng Man before Nanyang Tangchong Gong's ancestor
Deng Man word Deyang (Deng surname ancestor: Lady Pin Xin. Xuanyuan Huangdi 42 descendants. The grandson of Emperor Gao Chengtang XXIII, the younger son of Zuding, and the younger uncle of Emperor Yin Gaozong Wuding).