Michal Potocki (? –1749) – son of Feliks Kazimierz and Krystyna of Lubomirski family. Crown Scribe of Poland, voivode of Volhynia, Knight of the Order of the White Eagle, he took part in the battle of Kalisz on the side of the Swedes. Founder of the Capuchin church in Sedziszowie near Rzeszów, Poland. In the oval portrait, Michael Potocki's clear figure with a proud posture emerges from a neutral dark background. Professional, confident strokes are used to convey his individual features. To focus the attention on showing the person's inner state and his individuality, the painter has highlighted part of the background near his face. The portrait was executed in reserved colours. A red fur-lined cloak pinned on the right shoulder is a dominant colour accent. The portrait is attributed by the Polish researcher S. Szymanski to Sylwester Augustyn Mirys, a Scotsman by birth, who studied in France and worked in Italy and Poland. At the bottom of the portrait there is an inscription: «Potocki…» and the back: «Michal / Potocki Wd. Wolynsk, + 1731 fundator kapucynow w Sedziszowie».