Cai Yong
Cai Yong (Chinese: 蔡邕; pinyin: Cài yōng, 132–192), courtesy name Bojie, was Chinese astronomer, calligrapher, historian, mathematician, musician, politician, and writer of the Eastern Han dynasty. He was well-versed in calligraphy, music, mathematics and astronomy. One of his daughters, Cai Yan / Cai Wenji, was also a famous poet and musician.