In May 1840, Fyans was appointed as
Commissioner of Crown Lands for the Portland Bay district, an area half the size of England. With the support of sixteen
Border Police troopers, his duties included making government returns for the licensed runs and their occupants, receiving their annual £10 licence fee and maintaining law and order between the squatters and the Aboriginal people. Described as “a man of hasty temper and a high hand”, Fyans' word as commissioner was law in the district, his decisions often at odds with the interests of high-profile squatters . While he considered himself a "friend to the natives", when referring to the investigation and capture of Aborigines for trial he wrote to
Charles La trobe:Its a difficult thing to apprehend natives, with great risk of life on both sides. On the Grange, and many parts of the country, it would be impossible to take them; and in my opinion, the only plan to bring them to a fit and proper state is to insist on the gentlemen in the country to protect their property, and to deal with such useless savages on the spot.
Eumeralla Wars By 1840, white settlers in the Portland Bay district had perpetrated multiple
massacres of Aboriginal people during their colonisation of the region. A few settlers had also been killed including Patrick Codd, who was employed by John Cox at the
Mount Rouse property. It was assumed that an Aboriginal man named Figara Alkapurata (also known as Rodger) was the killer. Codd's death resulted in the colonial authorities taking formal action with Fyans and his troopers sent in to capture the ringleaders of Aboriginal resistance.
Extermination of the Gadubanud people In 1846, a workman employed by the surveyor George Smythe was killed by a
Gadubanud man at
Cape Otway. Smythe returned to Geelong and reported the case to Fyans, who organised a well-armed militia of ten Barrabool men to be sent to the Otways to deal with the Gadubanud. Fyans and Smythe led the group into the region, where the Barrabool troopers killed all the known members of the Otway tribe, male and female, except for one girl who was taken back to Geelong. This girl was later found dead near a fence at
Drysdale. ==Magistrate at Geelong==