No, I don't have anything more on James bp 1779. He might be a candidate for the James that you mentioned.

The next older brother Thomas bp 1776 (between Charles 1773 and James) I do know something about. He was a shoemaker on King Street, Douglas and lived to 90, had two wives (Margaret surname unknown d 1841 & Jane Cooil m 1841) but I think no children. He left a will.