Hi
One suggestion is to contact the SA State Library. They have copies of newspapers and maybe able to look up death notice of Keith William PARR died: 13 August 1995 and this might have Kerri's married name. If you go to address below this will assist you. I have used this process with other State libraries and they have always been extremely helpful.
http://www.slsa.sa.gov.au/site/page.cfm?u=387Cemetery: Centennial Park SA SA
Inscription Id: 4478548
Surname: Parr
Given Names: Keith William
Birth Date: 1919?
Death Date: 13 Aug 1995
Age: 76
Gender: M
Remarks: from Crafers
Cheers
Tania