Architect, born in London, of French parentage; made a special study of Gothic architecture; assisted in decorating the new Houses of Parliament, but becoming a Roman Catholic he gave himself to designing a good number of Roman Catholic churches, including cathedrals; he wrote several works on architecture, and was the chief promoter of the "Mediaeval Court" in the Crystal Palace; he was afflicted in the prime of life with insanity, and died at Ramsgate (1812-1852).