James Osborne of North Carolina, with wife and children, first settled in the Cedar Grove area in the late eighteenth century.

[2] By 1820, John Eby Reesor helped to construct a log building at the corner of Steeles Ave. and 11th Line to serve as both a school and a church, for Mennonites and Presbyterians.

"[3] By 1878 the hamlet also had four mills, a post office and general store, tavern and inn, and blacksmith shop (now at the Markham Museum and Historical Village).

[6] Today Cedar Grove is best known as the home of Cedarena, an outdoor skating facility built in 1927 on grass area on the south bank of the Rouge River.

Situated next to the Little Rouge River in the heart of the valley, the "Great Vine" is over 30 cm in diameter at the base and is estimated to have runners which, together, stretch over 1 km.