In the next two years, he measured and marked out village reserves, church lands, and allocations for settlers along the lower branches of the Hunter River and as far north as Patrick's Plains.

After crossing the Hunter River just to the north-west of the present site of Aberdeen, he named the Dart Brook and Kingdon Ponds, two tributaries that flow from the north.

[5] Cornish place names, scattered through the Hunter Region, mark Henry Dangar's surveys and record his deep affection for his birthplace.

In 1825, Dangar was commissioned by the government to allocate land grants to colonists along the Hunter River and its tributaries, which he had previously surveyed.

A board of enquiry found Dangar guilty of using his public position for private gain and he was dismissed from office on 31 March 1827.

On returning to Australia with his new wife Grace Sibly,[6] he was granted further parcels of land at Kingdon Ponds, and in the Port Stephens area.

During the voyage to England Dangar wrote his Index and Directory to Map of the Country Bordering Upon the River Hunter, which was published in London in 1828.

[9] Accompanied by his wife Grace, whom he married at St Neot on 13 May 1828, and their infant son, he returned in April 1830 to take up his new position at Port Stephens.

Dangar produced topographical and soil reports on the company's grants, and surveyed its 400,000 acres (161,874 ha) reserve north of the Manning River.

His reports of this area were so unfavourable that he was sent to explore, as an alternative location, the Liverpool Plains districts originally recommended to the company by John Oxley.

From the headwaters of the Manning River, he crossed the Great Dividing Range to the Liverpool Plains, and selected an extensive area of attractive land for the company's consideration.

Dangar quickly extended his interests, purchasing additional grazing properties and leasing extensive runs, which by 1850 amounted to more than 300,000 acres (121,406 ha).

[21][22] Dangar and his fellow squatters had established a secret society, the "Black Association", in their fight against the Aboriginal people over land.

The four remaining suspects were remanded to allow time for the main witness, an Aboriginal boy named Yintayintin or Davey, to be prepared in order to take a Bible oath.

In 1843 he was nominated for the electoral district comprising the counties of Hunter, Brisbane and Bligh in the first elective Legislative Council, but was defeated by William Dumaresq.

[28] Although the business won awards at the Great Exhibition of 1851 in London, and exported their product to India and California, the company ceased to operate by 1855.