Jan Karol Chodkiewicz was a military commander of the PolishLithuanian Commonwealth army who was from 1601 Field Hetman of Lithuania, and from 1605 Grand Hetman of Lithuania, and was one of the most prominent noblemen and military commanders of the PolishLithuanian Commonwealth of his era. His coat of arms was Chodkiewicz, as was his family name.
Chodkiewicz was born around 1560 as the son of Jan Hieronimowicz Chodkiewicz, Grand Marshal of Lithuania, castellan of Vilnius and Krystyna Zborowska, daughter of a Polish magnate family of Zborowscy. From 1573 he was a student at the Vilnius Jesuit College and the Vilnius University, and from 1586 to 1589, together with his brother Aleksander, he continued his studies abroad at the University of Ingolstadt. He visited Padua before returning to the PolishLithuanian Commonwealth in 1590.
Source: Wikipedia