A blog visitor is enquiring about a ship called Sir Cumbria - I have no record of such a ship, unfortunately, and no passenger list. If it is a ship which departed UK post 1890 your best bet is to search the shipping facility on findmypast. But it may not have had SA as a destination - perhaps it was Australia-bound. Do you think you have the ship name correctly? It seems unusual.
Methodists in Verulam - these were Byrne settlers and you can read more in John Clark's book Natal Settler Agent. Also see this blog at molegenealogy.blogspot.co.za/2013/03/verulam-settlers-to-natal-mission.html