Looking for a Dennison Chaplain Cawnpore India

Hello i am researching my family history and trying to find my GGGGrandfather a DENNISON he was a chaplain and he died at Cawnpore India 1857/59. His daugheter Eliza DENNISON married my GGGrandfather Thomas James DUKE in Bengal India on the 22/3/1858.
Any information would be welcomed.