Cooper Hewitt says...
From Grove Art Online:
Polish painter. He worked in Rome c. 1711–30, primarily on commissions from Poland and for the Polish Church in Rome. In 1716 he won an award in a competition organized by the Accademia di S Luca, and from 1725 he was a member of the Congregazione dei Virtuosi. He apparently painted only altarpieces and scenes from the Old Testament, working from prints of famous works and making copies from the Old Masters. His paintings, such as the Entombment (before 1731; Kraków, N. Mus.), exhibit a great eclecticism.
Czechowicz was back in Poland by 1731. During a long working life he was overwhelmed with commissions for altarpieces throughout Polish territory, such as the Mystical Marriage of St Catherine (1759; Vilnius, St Catherine). He lived mainly in Warsaw but frequently visited the provinces. In his portraits, for example of the chancellor Jean-Frédéric Sapieha (engraved 1741) and of Bishop Antoine Dembowski (engraved 1743), he adhered to the traditional formulae for Polish portraiture. He had numerous pupils (including Franciszek Smuglewicz) and imitators.
