Note: Joseph owned the well known Sylvania Vineyard at Norwood. He and Maria went on tour to England with the wines, and Joseph's eldest son who later inherited, managed there and at Clarendon where Joseph had purchased a neglected vineyard from a Mr. Leigh and turned it into a flourishing concern.
There is a very interesting paper by George Bell on the evolution of the wine trade into Britain and the impacts on the embryonic wine industry in Australia.
Joseph's Sylvania Vineyard gets a special mention where wine produced from Frontignac grapes had the highest alcoholic content of those vineyards tested at 33.5 degrees proof spirit.