Thanks Geoff.
Some errors there.
The Sydney Morning Herald - Sat 11 Sep 1875 p.1
MARRIAGES
JOHNSTON - RILEY.-September 4, by the Rev. T. Gainford, at the Mariners' Church, John Johnston, youngest son of the late Captain John Johnston, Peterhead, Scotland, to Rachel Mary Ann Kemp Riley, youngest daughter of William Riley, of this city.
1913 NSW Electoral Roll - GLEBE - MITCHELL-STREET POLLING-PLACE
JOHNSTON John, 89 Glebe-street, storeman
JOHNSTON Rachael, 89 Glebe-street, domestic duties
JOHNSTON Leslie, 89 Glebe-street, labourer
JOHNSTON George, 89 Glebe-street, carter
JOHNSTON John, junior, 89 Glebe-street, labourer
Death# 9969/1925 JOHNSTON JOHN - JOHN - SYDNEY * 28 Aug
Dave