Rockwood Rockwood is located on Highway 7 between Acton and the city of Guelph. The Eramosa River runs through the centre of the village. Early settlers to this area were Quakers. John Harris, the first settler, erected a shanty in 1821. In 1840 Colonel Henry Strange settled and brought further development to the area which became known as Strange's Mills. Strange was the Deputy Provincial Surveyor and he opened a lime quarry which provided stone for building mills. In the 1850s the community became known as Rockwood which reflected the lovely river valley, mixed forest, high rocky hills, and geological potholes. The Eramosa River provided power for John Gamble's sawmill which was the first in Wellington County. Grist, flour, oatmeal, stave, and woollen mills followed. A post office was opened in 1853 and the Grand Trunk Railway opened a station in 1855. Limehouse Limehouse is a community in the Town of Halton Hills in southern Ontario. It has a population of about 800 people and its closest neighbours are Georgetown and Acton. Limehouse has many hills, trails and a small school.