Burton died in Trieste early on the morning of 20 October 1890 of a heart attack. His wife Isabel persuaded a priest to perform the last rites, although Burton was not a Catholic, and this action later caused a rift between Isabel and some of Burton's friends. It has been suggested that the death occurred very late on 19 October and that Burton was already dead by the time the last rites were administered. On his religious views, Burton called himself an atheist, stating he was raised in the Church of England which he said was "officially (his) church".