Hi Prue, looks like you may have hit the jackpot
The book states that the headstones ended up at Bunnerong,
here are the MI Inscriptions recorded in the book for Bunnerong in 1969.
C of E Section
20 Isaiah DANKS died 19th September 1830 aged 6 years and 6months. (U-P) means Upright headstone in poor condition)
Wesleyan-Methodist Section (thought they be connected to you)
2629 John DANKS died 17th July 1848, also Thomas DANKS died 1st December 1849, also H DANKS died 1852, also Hannah DANKS died 5th September 1856, also Samuel DANKS died 15th September 1863, also Mary, wife of Thomas DANKS died 2nd July 1873, (U-P)
and also C of E Section
1698 Mr Richard BELFORD died 18th September 1843 aged 45 years
( U-F) f= fair
Nothing recorded for Joseph or Mary , or DUNKS , TONKS, BELFOUR
According to the book my G G G G Grandfathers headstone also ended up at Bunnerong, when I went out there it appears that some years ago they "cleaned out "the headstones and only a few ended up in a Pioneer Park, my John was not there I hope you have better luck
Cass