Stefan Sadorski was a courtier

Courtier

A courtier is a person who is often in attendance at the court of a king or other royal personage. Historically the court was the centre of government as well as the residence of the monarch, and social and political life were often completely mixed together...

, politician

Politician

A politician, political leader, or political figure is an individual who is involved in influencing public policy and decision making...

 and a diplomat

Diplomat

A diplomat is a person appointed by a state to conduct diplomacy with another state or international organization. The main functions of diplomats revolve around the representation and protection of the interests and nationals of the sending state, as well as the promotion of information and...

 of the Polish-Lithuanian Commonwealth

Polish-Lithuanian Commonwealth

The Polish–Lithuanian Commonwealth was a dualistic state of Poland and Lithuania ruled by a common monarch. It was the largest and one of the most populous countries of 16th- and 17th‑century Europe with some and a multi-ethnic population of 11 million at its peak in the early 17th century...

. He was a Polish noble (member of szlachta

Szlachta

The szlachta was a legally privileged noble class with origins in the Kingdom of Poland. It gained considerable institutional privileges during the 1333-1370 reign of Casimir the Great. In 1413, following a series of tentative personal unions between the Grand Duchy of Lithuania and the Kingdom of...

).

In the royal court

Royal court

Royal court, as distinguished from a court of law, may refer to:* The Royal Court , Timbaland's production company*Court , the household and entourage of a monarch or other ruler, the princely court...

 of the Polish king Sigismund III Vasa

Sigismund III Vasa

Sigismund III Vasa was King of Poland and Grand Duke of Lithuania, a monarch of the united Polish–Lithuanian Commonwealth from 1587 to 1632, and King of Sweden from 1592 until he was deposed in 1599...

 he achieved the official rank of Great Secretary, and it was then that he became a colleague of bishops of Warmia

Bishops of Warmia

This is a list of Bishops and Prince-Bishops of the Diocese of Warmia The Bishopric was founded in 1243 as the Bishopric of Ermland, one of four bishoprics of Teutonic Prussia. In 1356 it became an Imperial Prince-Bishopric under Emperor Charles IV, and from 1512 until the 20th century it was an...

 Szymon Rudnicki and Mikołaj Szyszkowski. He served in that capacity for Sigismund, and after his death, for Władysław IV Waza. He was particularly active in the northern realms of the Commonwealth, often being an envoy of the Polish king to the Duchy of Prussia.