Jan Borukowski of Bielin (1524–1584) was the Bishop
of Przemyśl, and was the royal secretary of Poland from 1553. In
1569, he signed the act of annexation of Podlaskie, Volhynia and Kyiv to the kingdom during Sejm in Lublin.[1][2]
References
^Lukowski, Jerzy; Zawadzki, Hubert (20 September 2001). A Concise History of Poland. ISBN 9780521559171.
^Riasanovsky, Nicholas Valentine (2000). A History of Russia. ISBN 9780195121797.