james would appear to be an unusual name for a Skinner - s/o Wm Skinner + Ann Arthur bapt Andreas 1806-05-13 looks possible - couldn't see one with an 1812 birth year.
Ann Arthur came from Santan (marr entry reads Wm Skinner from Andreas).
He was an early emigrant thus expect a pull from settled family - a Daniel Skinner + family are noted as emigrants in 1827.