Hi Mary, The oldest Roman Catholic church is St. Osburg's.and is situated in the central area of Coventry. it was begun in 1843 and was completed in 1845. In the 20th century R C churches and schools were added in the suburbs. I believe that St Elizabeth's, in Foleshill, near where i used to live, was the first of these. For marriages in the mid 1800s I would look to St Osburg's. Regards, Muriel.(NZ).