Captain James Green, Captain of the Dunbar, which went down with the loss of 58 crew and 63 passengers; 28 are interred here, others have individual graves.
Catherine Adamson, captained by Capt G Stewart, Went down with the loss of 17 crew and 4 passengers;The bodies of the Catherine Adamson victims, as could be recovered, were interred in the mass burial set aside for the Dunbar victims nine weeks earlier. The grave of Pilot John Hawkes, who drowned while discharging his duties aboard the Catherine Adamson, can also be found in Camperdown Cemetery; also the grave belonging to Captain Creer, whose steamer went to the aid of the Catherine Adamson.
"Within this tomb were deposited by direction of the Government of New South Wales, such remains as could be discovered of the passengers and who perished in the ships, Dunbar and Catherine Adamson. The former of which was driven ashore and foundered when approaching the entrance to Port Jackson, on the night of the 20th August. The latter after entering this Port on the morning of the 24th October" A.D.1857
https://en.wikipedia.org/wiki/Dunbar_(ship)
https://www.records.nsw.gov.au/archives/collections-and-research/guides-and-indexes/series-list/4332