Braddan is the name - the only Cottle on Island in 1841 was english born Edward Cottle - a baker living in a multiple occupancy house in King St Douglas (Douglas dist 6) - Braddan is burial ground for most of Douglas at that time - his wife was margaret gelling (marriage doesn't appear to be on Island) - they don't appear to be on Island in 1851

you might find plugging 'cottle' into search engine on manxnotebook (see tabline) rewarding