Wu Zongyuan and Wu Daozi are not the same person. The former was born in the Northern Song Dynasty 300 years later than the latter.
Wu Zongyuan (about 980-1050) [Northern Song Dynasty], was originally named Zongdao and had the courtesy name Zongzhi. A native of Baibo, Henan (now Jili District, Luoyang, Henan). During the Jingde period of Zhenzong, the Yuqing Zhaoying Palace was built, and painters from all over the country were recruited. They were divided into two departments. Zongyuan was the leader of the left department. His family had a long history of Confucianism, and he was a Zhailang of Yin Tai Temple, and his official position was Wai Lang, a member of the Ministry of Yu. He is good at painting Taoist and Buddhist figures and has painted a large number of murals for temples in Kaifeng and Luoyang.
Wu Daozi (about 680-759 AD), a famous painter in the Tang Dynasty, is honored as the Painting Sage in the history of painting, also known as Daoxuan. Han nationality, from Yangzhai (now Yuzhou, Henan). He was born around AD 680 (the first year of Yonglong) and died around AD 758 (the first year of Qianyuan). He was lonely and poor, and he became famous for his paintings when he was young. He once served as county lieutenant in Xiaqiu, Yanzhou (now Ziyang, Shandong), but resigned soon after. Later he lived in Luoyang and engaged in mural creation. During the Kaiyuan period, he was called to the court for his good painting skills and served successively as enshrined minister, doctor of internal medicine, and friend of Prince Ning. He once studied calligraphy with Zhang Xu and He Zhizhang, and learned how to use pens by watching Lady Gongsun dance her sword. He is good at Buddhism, Taoism, gods and ghosts, figures, landscapes, birds and beasts, vegetation, pavilions, etc. He is especially good at Buddhism, Taoism, figures, and mural creation.