The earliest calligrapher was Li Si, the prime minister of Qin Dynasty. The earliest official script was summarized and used by Cheng Miao, the earliest true calligrapher Zhong You, the earliest calligrapher Wang Xizhi and the earliest cursive writer Zhang Xu.
There are too many. Which way shall we look? For example, you can also use tools, pen and ink, inkstone, calligraphy, different dynasties and so on.