Background
Siemiginowski (born as Szymonowicz) was the son of a painter, Jerzy Szymonowicz and Teodozja née Korunka, born in Lwów (Lviv) in the mighty Polish–Lithuanian Commonwealth (today part of Ukraine).
Siemiginowski (born as Szymonowicz) was the son of a painter, Jerzy Szymonowicz and Teodozja née Korunka, born in Lwów (Lviv) in the mighty Polish–Lithuanian Commonwealth (today part of Ukraine).
Before he went to Rome he probably spent at least a year, possibly two, in Paris. In 1682 due to recommendation of king John III he was admitted to Accademia di San Luca in Rome, he receive the Knighthood of the Golden Spur and the title of Eques Auratus from the Pope Innocent XI. In Rome he was trained by Lazzaro Baldi, Luigi Garzi and Carlo Maratta. Shortly after his return to Poland in 1684 he was ennobled by the king and took the name of Chevalier Eleuter (Greek for free, independent).
In 1687 John III granted him the village Łuka near Zolochiv to confirm his nobility.
After king"s death he become secretary of Augustus II the Strong and was a court painter of Aleksander Benedykt Sobieski. At that time he still worked in Wilanów (Sobieski"s suburban palace) and supervised the construction of new palace"s wings.
In 1701 he was adopted by the impoverished noble family of Siemiginowski (he paid them lot of money for this privilege) and since that time he used their name. Siemiginowski was married four times and had 11 children.
In 1704 he had a house in Warsaw and a manor house at Wielopole near Warsaw.
He died probably between February 28, 1708 and March 13, 1711. Siemiginowski-Eleuter was the main artist who was responsible for decorating and painting of the interior of Wilanów Palace in Warsaw. His painting was heavily influenced by French artists of the Baroque.
Siemiginowski painted many frescoes, notable for their many colors.
His subject matter varied between dramatic scenes to peaceful landscapes. Siemiginowski established his own school of painting in Wilanów and was a renowned architect (participated in designing of the Town Hall in Zhovkva).
Many of his religious paintings in Warsaw (Crucifixion in the Holy Cross Church, Transfiguration in the Capuchin Church among others) were destroyed during the extensive bombardment of the city by the Germans in 1944.
He painted antiquitised portraits of the members of the royal family and made engravings in participation of Charles de Louisiana Haye.