Winsome,Have you looked into this part of the family?
Digger - South Australian Births Registrations 1907 to 1928
Surname: HAWKE Given Names: David William Date: 1907-09-04 Sex: M Father: Richard HAWKE Mother: Laura Emily HODGE Birth Place/Residence: Adelaide District Code: Ade Symbol: Book: 790 Page: 44 Cross Reference:
Digger - South Australian Marriages, Registrations 1842-1916
Groom: HAWKE Given names: Richard Bride: HODGE Given names: Laura Emily Date: 1898-01-26 Groom Age: 22 Status: Single Groom's Father: John HAWKE Bride Age: 19 Status: Single Bride's Father: Melville HODGE Place: Res of Jas Couzens Pine Creek District: Cla Book/Page: 194/316