Antique screw back lapel pin owned and worn by a member of the Knights of Pythias 14k Gold with enamel decoration of the Knights of Pythias The three letters in the triangle represent the three distinguishing principles, Friendship, Charity, and Benevolence EUC Founded in 1864, the Order of Knights of Pythias is celebrating 160 years in 2024 The Order of Knights of Pythias is an international, non-sectarian fraternal order established in Washington, DC, on February 19, 1864, by Justus H. Rathbone. It was the first fraternal order to be chartered by an Act of Congress.