Have you ever tried the website for "THE WEST BRITON & CORNWALL ADVERTISER" 1836-1887 newspaper ? It doesn't have every year of its publication, and those years available sometimes have only 2-3 months recorded. You can't search by surnames. You have to scroll through all the 'news items' - mostly bdm, accidents, court reports etc. Long slow process, but you can turn up some real gems. Well worth a visit.