Stefan Pac (c.1587-1640) was a Polish-Lithuanian szlachcic. He was a secretary of King Sigismund III Vasa since 1611, Grand Clerk of Lithuania since 1615, Recorder of Lithuania since 1626, Court Treasurer of Lithuania since 1630, Grand Treasurer of Lithuania since 1630, Deputy Chancellor of Lithuania since 1635. Marshal of the Sejm (extraordinary) on November 13 - November 18, 1629 in Warsaw. Wikipedia
The definitive Wikipedia entry for Stefan Pac. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Stefan_Pac