guess you have seen this on Manxnotebook:

Mona's Herald, February 4th, 1863, carries the obituary notice of the Rev. Alexander Farrill, a son of Patrick Roche Farrill, a refugee from France during the time of the Revolution who found his way to Douglas and in 1793 married Elizabeth Lewthwaite, a daughter of Alexander Lewthwaite, in 1793. This man had become licensed as a Wesleyan preacher when twenty years old and had gone out to Labrador, later becoming an itinerant preacher in the United States. After holding several positions there he retired at Mount Morris New York, in 1848. His death occurred on January 27th, 1863 at the age of seventy. [quoted by W.Cubbon in Bibliography - chapter on Paper Makers p1426]
Alexander Farrell appears, no. 33, on the list of Wesleyan Local Preachers on the plan for Douglas Circuit Aug-Sep 1823.
Cubbon quotes Manks Advertiser, July 20th, 1805, on his father: He was a man of considerable fortune-some £30,000-which he succeeded in dissipating in a very few years. He joined his father-in-law [Alexander Lewthwaite] in the business, but his health broke down, and on July 15th, 1805, he died ' at the Paper Mill, near this town [Douglas], in the prime of life.'