The comment in Rosser (letter 6) re Robert snr was:
"March 11th, 1833, at Ballaugh, Mr. Robert Corlett, aged seventy- five. He was an old disciple. Upwards of forty years he had been a member of the Methodist society. The gentleness of his manners, the kindness of his disposition, and the cheerfulness with which he did good on all occasions, obtained for him a place in the esteem and affection of all who knew him. His end was peace."

many of the Northern farmers were Wesleyan LP's - suspect a combination of being able to run their own society without imposition of English Bishop (there are several comments in conf minutes about not really wanting English (ie the travelling) preachers !)+ annoyance at tithes had much to do with it.