Kaldon

Kaldon was an early Emperor of the Klingon Empire. He established the rank of Dahar Master. 

History
Kaldon created the rank of Dahar Master bestowed to Biroq for his martial triumphs because no existing rank was adequate.

According to the author K'Ratak, Kaldon was said to have sung the qe'Sa' when it was still a song in verse. Kaldon sang it when he led his troops into battle.