Although there was a setback in progress with a stonemasons' strike between September 1841 and May 1843, the House of Lords had its first sitting in the new chamber in 1847. In 1852 the Commons was finished, and both Houses sat in their new chambers for the first time; Queen Victoria first used the newly completed royal entrance. In the same year, while Barry was appointed a Knight Bachelor, Pugin suffered a mental breakdown and, following incarceration at Bethlehem Pauper Hospital for the Insane, died at the age of 40.