dr Hewit & son 7.2.1805 at Wake's
The only medical doctor Hewitts I found were Thomas who died 1794 and Cornwallis who only got his MD in 1822. There were several surgeons, but this was more probably Alexander Hewat DNB 1738/9?-1824? who began his career as a minister in South Carolina came to London in 1777. in 1797 his sermon The Obligations of Christians to Avoid War was published. He married Mrs Eliza Barksdale at St Marylebone on 16.9.1798, and she died in 1814. His will PCC 1824 Alexander Hewat DD of Gt Quebec St Marylebone mentioned no children