Cai Yong

Cai Yong, courtesy name Bojie, was a 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.

Summary from Wikipedia (CC BY-SA 4.0) · Dates from Wikidata (CC0)

Who was born first?

• Cai Yong and Didius Julianus were born the same year
• Cai Yong was born 3 years after Lucius Verus
• Cai Yong was born 3 years after Irenaeus
• Cai Yong was born 3 years after Aulus Gellius
• Cai Yong was born 33 years after Ptolemy

Timeline

1. Ptolemycirca AD 100 – circa AD 170
2. Aulus Gelliuscirca AD 130 – circa AD 180
3. Irenaeuscirca AD 130 – circa AD 202
4. Lucius VerusDecember 15, AD 130 – January 23, AD 169
5. Cai Yong (this page)133–192
6. Didius JulianusAD 133 – June 1, AD 193

Related

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• Nicolaus CopernicusFebruary 19, 1473 – May 24, 1543
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• Gottfried Wilhelm LeibnizJune 21, 1646 – November 14, 1716