Dear Elizabeth
I noticed the reference to John Sutton & Rebecca Sawyer on your web site while researching some of my family history.
John and Rebecca's daughter Rebecca Sutton is my Great-Great Grandmother. From what I can determine, she married a Robert Brooks in Victoria in 1853, when she was only 15 years old. After Robert Brooks' death, Rebecca married my G-G Grandfather, George Henry Combs at Inglewood, Victoria on 20/11/1865. George and Rebecca moved to Western Australia some time between 1895 and 1898, together with their eldest son (also named George Henry Combs, who was married with a young family of his own) and their three unmarried daughters. Another married son (John Charles Combs) followed them from Victoria to WA in about 1902.

Rebecca died in 1919 and is buried in Karrakatta Cemetery, the main cemetery serving Perth. George Henry Combs Snr died in 1928 and is buried with his wife. I have not been able to track down all lines of the families or Rebecca Sutton's descendents, but those I do know of are:
8 children (3 of whom died in childhood);
23 grandchildren;
37 g-grandchildren;
30 g-g-grandchildren (some lines in the family incomplete);
66 g-g-g-grandchildren (some lines in the family incomplete); and
19 g-g-g-g-grandchildren (some lines in the family incomplete).

Incidentally, I did some searching and found that John Sutton, Rebecca Sawyer and 7 children came to Australia on the barque Sultana. The ship left from London 23rd March 1850 / Plymouth 6th April 1850, and arrived at Port Adelaide, South Australia 25th July 1850. Details of the passenger list is at TheShipsList
Regards
Bill Combs