William Frederick Hilder was born 3 February 1888 in Petersham, New South Wales, Australia to Alexander Hilder (1852-1929) and Charlotte Reynolds (1852-1926) and died 24 October 1969 Newtown, New South Wales, Australia of unspecified causes. He married Thyra May Marshall (1899-) 17 April 1920 in St Leonards, New South Wales, Australia.
|Offspring of William Frederick Hilder and Thyra May Marshall (1899-)|
|Alick William Hilder (1922-2001)|
|Ada Jean Hilder (c1925-2009)|
|Edward James Hilder (1926-2005)|
|Mavis Irene Hilder (1928-2015)|
|Edith Rose Hilder (-)|
|Jeffrey Hilder (1930-2008)|