Stone cold facts

This one comes courtesy of Dad:

Richard Bettany died July 19th 1849 aged 75. Here he lies in the graveyard at All Saints Church Dilhorne, Staffordshire. He was born about 1764 . He outlived three wives and at least six children. What was his occupation?

It would appear his first wife Elizabeth died in 1815 aged 38 years. Two of their sons died young but a son Richard must have been born around 1804

His father Richard married again but his second wife’s name is not mentioned on the stone. Did she die in childbirth around 1816 when Elizabeth was born?

Or was Elizabeth, who died in 1838, aged 22 years, a daughter given by his third wife Maria who died 28th August 1846 aged 63 years?

Tragedy clearly struck the family in 1843 when Maria died on the 4th February aged 23 years and her sister Charlotte died on 15th February aged 21 years. What was the cause of death? Richard, was to die aged 40 on 3rd December 1844. A tragic eight years for Richard between 1838 and 1846. Five of his family died and he himself survived until 1849.