I don't think there was any formal ministerial training for Primitive Methodist ministers until 1881 - at least I can't find any reference to such in Kendall's History of the PM church - the Primitive Methodist Church in the USA was never very large (and Kendall states that before 1843 its history was not good) - post that period it seemed more of a very small English emigrant enclave using books supplied from England unlike the main Methodist Church which had early on split away from London based Wesleyan Methodist control and developed a large following and was strongly American in outlook.

(The PM in Canada was more successful but here I guess the strong links back to London were not seen as a bar)

Can you give me dates of his ministry - if he trained in England and then went out officially to US then this may well be recorded in one of the Methodist magazines (however I did check the indices of these for any Manx related material when I worked in John Rylands library in Manchester (UK archives for Methodism) but don't recall coming across any ref