In which dynasty did Taizhou Taoist calligrapher Du Guangting become famous?

In which dynasty did Taizhou Taoist calligrapher Du Guangting become famous? Du Guangting, 850-933, was a Taoist in the late Tang and Five Dynasties. Later, he went to Shu with Nuozong and became an assistant minister of the Ministry of Finance. Calligraphy became famous in the late Tang Dynasty.