Dorothea Ostrelska, also known as Dosieczka, Doska and Dvärginnan Dorothea (Dorothea the Female Dwarf), floruit 1577, was a Polish Court dwarf in service of the queen of Sweden, Catherine Jagellon. She was a favorite and confidante of the queen, and placed in a position of some political influence. She upheld a correspondence with the sister of Catherine, Sophia, and has left some writings which provides a source of information of contemporary Sweden.
References
Dorothea Ostrelska Wikipedia(Text) CC BY-SA