According to this record I think he married in Australia unless his first wife died and he remarried in South africa

Australia Marriage Index, 1788-1950
Name: Edmond A De Vere Pery
Spouse Name: Ethel M Cooper
Marriage Date: 1898
Marriage Place: New South Wales
Registration Place: Sydney, New South Wales
Registration Year: 1898
Registration number: 4794

This looks like it might be his birth:

Australia Birth Index, 1788-1922
Name: Edmond A H D V Pery
Birth Date: 1876
Father's Name: Edmond A T Pery
Mother's Name: Clara J
Birth Place: New South Wales
Registration Year: 1876
Registration Place: Tweed R??er, New South Wales
Registration number: 21186

Looks like three birth registered to parents Edmond 7 Clara:

21186/1876 PERY EDMOND A H D V EDMOND A T CLARA J TWEED RIVER
23175/1878 PERY PERCY DE VERE EDMUND A T CLARA JULIA TWEED RIVER
7784/1879 PERY TERENCE G C DE V EDMOND A T CLARA J C ST LEONARDS

Marraige reg NSW BMDs:

4794/1898 DE VERE PERY EDMOND A COOPER ETHEL M SYDNEY

I was looking for a marriage in South Africe and found this on a website :

http://www.bellsite.id.au/gdbtree/HTMLFiles/HTMLFiles_44/P20406.html

http://www.bellsite.id.au/gdbtree/HTMLFiles/HTMLFiles_15/P20399.html

Hi noggin
i know about Edmond's birth, his parents and his siblings. His first wife did die in Australia although there is a misspelling of her surname on her death certificate(Peary instead of Pery).The second wife was Marieta Allitza Coetzee of South Africa.