Samuel Parr
From Anecdotes about Eighteen Century Authors

Samuel Parr and Sir James Mackintosh, both strong Whigs, were in sympathy with the French Revolution, and Mackintosh answered Burke's Reflections with his Vindicicæ Galliccæ (1791). But whereas Parr always stuck to his revolutionary principles, Mackintosh became more conservative in later years.

Note from Samuel Parr, from Literary Anecdotes