[9] The Provincial Archives of New Brunswick gives British Prime Minister Pitt the Younger as the inspiration of the name, but erroneously gives him the title of Earl of Chatham, which he never held.

The strongest case for the parish's eponym might be General Pitt, who was Master-General of the Ordnance for most of the Napoleonic Wars and closely involved with planning Britain's coastal defenses.

General Pitt was influential enough to be offered the Portugal command that later went to Arthur Wellesley, 1st Duke of Wellington.

[11] The southern boundary ran eight miles up the River from its mouth, "or until it intersects the before mentioned line [...] forming the rear of the said Parishes of Wellington and Carleton".

Revised census figures based on the 2023 local governance reforms have not been released.