David Dunlop was a forceful man with strong convictions, and he was far ahead of his time in the treatment of aboriginals. He advocated the wisdom of contracting with any willing aborigine for the completion of a limited and specific task, and then letting him return, dignity unimpaired, to his own tribal business.
He was also a difficult and quarrelsome man by nature having been removed from office in Penrith after many disagreements with the unpaid magistrates. He was initially popular with the free settlers by improving convict behaviour through his stern disciplinary measures, and he was an efficient administrator who involved himself heavily in the affairs of the district. However, being autocratic and abrupt he soon made enemies in the district with people who were influential enough to have him removed through representation to Governor Gipps.
It is not known at this stage what he did in the last 16 years of his life, but it is assumed that he looked after some of the official administration of government agencies in Wollombi.