Sethus Calvisius
German music theorist and composer
Sethus Calvisius or Setho Calvisio, originally Seth Kalwitz, was a German music theorist, composer, chronologer, astronomer, and teacher of the late Renaissance. Wikipedia
Born: February 21, 1556, Gorsleben, An der Schmücke, Germany
Died: November 24, 1615 (age 59 years), Leipzig, Germany
Grandchildren: Sethus Calvisius Jr. and Theodor Calvisius
Children: Sethus Calvisius