- 卫瓘 wèiguàn Wei GuanHistorical figure (220–291), style name Boyu; a prominent official and calligrapher of the Cao Wei and Western Jin dynasties who was famous for his cursive script.
- 张怀瓘 zhānghuáiguàn Zhang HuaiguanFamous calligrapher and calligraphic theorist of the Tang Dynasty from Hailing (modern-day Taizhou, Jiangsu); known for his works on calligraphic history and theory such as [[书断|書斷|shu1 duan4]] and [[书议|書議|shu1 yi4]].