Jan Jakub Szymonowicz (1740–1816) was a Catholic priest; between 1801 and 1816 – Lviv archbishop of the Armenian Catholic Church. He was born into an Armenian family in Kamianets-Podilskyi. Jan Szymonowicz studied philosophy and theology in Lviv for six years. On August 11, 1764, he was ordained a priest. The man was proficient in many languages, particularly in Polish, Latin, German, French, and Italian. He was the dean of the theological faculty of the Lviv University, where he gave lectures in theology. In the late 1790s and up to the early 1800s, Ostap Biliavskyi created a gallery of portraits of Armenian Latin bishops, including the portrait of Jan Szymonowicz. The bishop is depicted in an illuminated oval. The artist managed to express the character of the balanced and educated person, as evidenced by a man’s high forehead and a piercing gaze from under thick dark eyebrows. The works by Ostap Biliavskyi are characterized by a masterful depiction of the individual features of the portrayed people.