James Allen Cairns Robertson was born 17 January 1871 in Fentons Island, New South Wales, Australia to William Robertson (1822-1881) and Anne Doyle (1832-1917) and died 1920 Rockdale, New South Wales, Australia of unspecified causes. He married Agnes Sarah Cramp (1877-1958) 1895 in Newtown, New South Wales, Australia.
|Offspring of James Allen Cairns Robertson and Agnes Sarah Cramp (1877-1958)|
|Mildred Emily Ann Robertson (1896-1947)||1896 Marrickville, New South Wales, Australia||6 July 1947 Parramatta, New South Wales, Australia||Silvester Francis Carman (1889-1933)|
|Dorothy Agnes Robertson (1903-1995)||8 February 1903 Marrickville, New South Wales, Australia||Baden Thomas Amos (1902-1974)|
|Marjorie Robertson (1905-1992)|
|James A Robertson (1910-1955)|