When British settlers moved onto the
Hawkesbury River in 1794, they constructed farms by removing the yams and planting Indian corn (
maize). The
Dharug people saw the corn on their land as a replacement carbohydrate of the yams and when the corn ripened, they carried it away. Settlers fired shots on the Dharug people to drive them away, and a series of raids by Aboriginal people was followed by settlers killing seven or eight of them. The
Battle of Richmond Hill occurred in May 1795, where 62
New South Wales Corps soldiers went to the Aboriginal camps at Richmond Hill at night, killing seven or eight people there.
Kate Grenville's 2005 historical novel
The Secret River popularised the idea that the yams at Hawkesbury River were murnong, known by the Darug people as midyini, but academics suggest the yam was a different plant. Other conflicts arose when Aboriginal people took potatoes from settler farms, on areas previously used for growing murnong. In April 1838,
Tullamareena and Jin Jin were arrested for stealing potatoes from John Gardiner's property in
Hawthorn. They were placed in Melbourne's first gaol, but they escaped by setting fire to the thatched roof. In January 1840, Jaga Jaga (Jacky Jacky) and around 50
Wurundjeri men stopped at James Anderson's station in
Warrandyte and rooted up potatoes at the farm using
digging sticks during the night. Anderson confronted them angrily, but Jaga Jaga's men also possessed rifles and a purposely shot past Anderson's ear. They left to Yaring, which led to the
Battle of Yering, but no-one was killed. == Contemporary revival and conservation ==