Settlement and dispossession of the Wurundjeri lands began soon after a ceremony in which Wurundjeri leaders conducted a "tanderrum" ceremony, whose function was to allow outsiders temporary access to the resources of clan lands. John Batman and other whites interpreted this symbolic act, recorded in treaty form, as equivalent to medieval enfeoffment of all Woiwurrong territory. Within a few years settlement began around Pound Bend with Major Charles Newman at Mullum Mullum Creek in 1838, and James Anderson on Beal Yallock, now known as Anderson's Creek a year later. Their measures to clear the area of aborigines was met with guerrilla skirmishing, led by Jaga Jaga, with the appropriation of cattle and the burning of fields. They were armed with rifles, and esteemed to be excellent marksmen, firing close to Anderson to drive him off as they helped themselves to his potato crop while en route to Yering in 1840. A trap set there by Captain Henry Gibson led to Jaga Jaga's capture and a battle as the Wurundjeri fought unsuccessfully to secure his release. Resistance was broken, and settlements throve. One elder, Derrimut, later stated: