Diego Ortiz
Born: 1510, Toledo, Spain
Died: 1570, Naples, Italy
Nationality: Spanish
Diego Ortiz was a Spanish composer and music theorist in service to the viceroy of Naples ruled by the spanish monarchs Charles V and Philip II. Ortiz published the first manual on ornamentation for bowed string instruments, and a large collection of sacred vocal compositions.
Read more at https://en.wikipedia.org/wiki/Diego_Ortiz