Re that 1860 NSW m.c. with missing information as to parents etc ...
The indexing of civil registrations for marriages from that era were not complied by NSW BDM Reg General's office until much later. Many of the churches forwarded only limited information when they were requested to in around 1879. However, the clergy conducting the wedding should have recorded the parents names for both the bride and the groom, as well as other vital family history information (occupation, age etc). The clergy were required by their own denomination's laws to obtain the information regarding parents of the couple.
That information should be recorded in the local parish register ... at least two concurrent "logs" were maintained, and the church regulations required these to be kept separate and in fire safe places (usually one within the church building and one in the manse etc).
Some local family history groups have transcribed their local parish registry books. Have you considered contacting the church/denomination mentioned on the transcript?
Here's a link to the Shoalhaven Family History's website
http://www.shoalhaven.net.au/~sfhs/Here's a link to the NSW BDM's online information about their historical records
http://www.bdm.nsw.gov.au/familyHistory/historyofRegistrysRec.htm scroll down and note that even today the process of reconciling the records is not complete. (hence black spaces on many m.c.)
Cheers, JM