Hi Susie,
I do not see any births to this couple in SA.
PeeCeeBee has well covered Emma

and provided Williams Death, (no relative was recorded) Buried Moonta
http://www.coppercoast.sa.gov.au/site/page.cfm?c=24894 as was his son William. I do not see Elizabeth.
BISAKING Alfred Par T b c1837 occ farm lab res Strathalbyn mar 4 May 1857 Blakiston Emma nee PALIN father W b c 1838.
I do note William and Clara married at the home of Alfred King.

Now there is an illigitimate birth here - 2 months after William married
PALIN William 27 Nov 1860 Strathalbyn Dist Str Symbol X 21 405 Parents William Palin and Elizabeth Wallis (also see Wallis)
Only a very small entry in BISA for son William - nothing at all for parents
PALIN William b c1839 died 8 May 1874 bd Moonta SA arrived by 1872 Occ Farmer Res Strathalbyn York Valley
Also noted a birth in Ballarat Vic
PALIN Thomas William 1861 13590 parents William PALIN and Clara LLOYD
Possible marriage for Elizabeth
SOLLY John 35 Status N father John =
PALIN Mary Elizabeth 20 Status N father William 1857-04-17 Res of Rev J B Austin Lashbrooke Dist Str 30 11
Not having any joy with anything further on them

Cheers Kris
