SuburbHornsby HeightsTypeOtherDetailsEnters Walls Gully in the upper reaches of Calna Creek, a tributary of Berowra Creek. Charles Grimson (1876-1938) bought land in the gully below Old Berowra Road which included Breakfast Creek. He served in both the Boer War and World War I, and later became a recruiting sergeant in Hornsby.CreatorPowell, John P. (1994) Placenames of the Greater Hawkesbury Region, Hawkesbury River Enterprises: Berowra, p.52.
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Grimson's Farm is now the site of Hornsby North Public School
Powell, John P. (1994) Placenames of the Greater Hawkesbury Region, Hawkesbury River Enterprises: Berowra, p.52., Grimson's Gully. Hornsby Shire, accessed 02/06/2026, https://hornsbyshire.recollect.net.au/nodes/view/6309