Royal Secretary is a position at the court of a monarch generally responsible for communicating the sovereign's wishes to the other members of government.
In most cases the royal secretary is a close adviser of the monarch.
Under the Jagiellon dynasty the royal secretaries were responsible for arranging the royal correspondence, representing the king at the regional sejms, arranging all kinds of cases most often financial, diplomatic correspondence, and editing the most important public documents.
The elected kings maintained the tradition and the royal secretary often had a great deal of power.
[6] The secretary to the Pope, formerly known as Secretarius Domesticus evolved into the Secretariat of State.