While on the subject of well-known clergymen, may I introduce Richard Polwhele? His dates are 1760 -- 1838, and he was vicar of Manaccan in Cornwall. Googling him turns up quite a bit of information: he was well known as a minor writer and local historian of Devon and Cornwall.

However, his main claim to minor fame is his authorship of `The Unsex'd Females', an anti-feminist poem published in 1798 that attacks Mary Wollstonecraft at some length, and, more briefly, other women writers including Mary Robinson. See the link to the poem. By a delightful irony of history, it's now a valuable resource for anyone wishing to find out about obscure women writers and feminists of the 18th century.

I am vaguely speculating here, but I wonder if he's the reason for JA's aversion to the name Richard: he seems more likely than Richard III