Leopold Dmochowski, born 1929. He joined the National Military Union (NZW) in March 1946. He adopted the codename Sęk (knag). He served in the liaison network of the Commander of the Białystok Circuit of the NZW, Władysław Żwański. codename Błękit (blue). He was arrested by the District Office for Public Security (PUBP) in August 1949. He remained in prison until November 1949.