call in the manx Museum and check MI's - Deborah should also be able to do this herself by either buying the MI book from IoMFHSoc or I believe borrowing a microfilm of it at any LDS fam hist centre - there are 4 yards in Douglas active at those periods Braddan,Onchan, St George's and Douglas Borough cem - the latter is very large though often the graves are arranged in approximate date order.