It is one of the four former parishes of Murray County which became part of the ACT, along with Canberra, Narrabundah and Gigerline. While other parishes lost land to the ACT, these were the only ones to lose all of the land within the parish. It was bounded to the north by the Molonglo River, and to the west and south by the Murrumbidgee River. It includes the area around Mount Stromlo, and the north-western part of Weston Creek, including Duffy. It does not actually include the present day suburb of Yarralumla, which was in Narrabundah parish, but it was close to it.
