After the fall of Louisbourg in 1758, Captain William Cox was left in charge of English soldiers in Sydney. In 1796 Cox obtained a grant of 1300 acres of farmland along the Spanish River where he had been living since 1790. English soldiers cleared the land, built a house, stable and barns. They then set up a grist mill and a road was built from his farm to the mill. Captain Cox lived on the farm with his wife and ran a successful grist mill and dairy farm. He named the land Cox’s heath before returning to England in 1809.[4] James Boutilier from St. Margarets Bay, Nova Scotia ran a coal shipping business carrying coal from Sydney Mines to Halifax, Nova Scotia. He purchased Captain Cox's land for £300 in gold. Three brigantine ships sailed up Spanish River in May 1811 carrying the Boutilier, Lewis, and Andrews families, who settled in Coxheath. The grist mill was turned into a sawmill when wheat became difficult to grow. It was used in a ship building and repair business run by the Boutilier and Andrews families in the mid-1800s. Around 1850, several Scottish families began to settle near Blacketts Lake. By the turn of the 20th century, the original land of Captain Cox was divided into 25 separate farms. The farms provided the main supply of farm products for the residents of Sydney.[4]

This is a great post and answer. We have a GENEALOGY section (under People) on goCapeBreton.com to help encourage this type of knowledge sharing and it's great to see it in action!