 In 1822 he was commissioned by general Ludwik Michał Pac to complete his palace in Dowspuda (then in Congress Poland, now in north-eastern Poland).He settled in Warsaw, where from 1827 he worked for the Council of State and where he became professor (1851-1858) at the Academy of Fine Arts.Enrico Marconi married a daughter of general Pac's gardener, Małgorzata () Heiton, who came from a Scottish family settled in Poland.