In 1817 the Rev. William Jenkins, a native of Kirriemuir, Scotland, a missionary to the Oneida Indians of New York, came to Canada in response to the plea of inhabitants of Scarborough, Markham and Whitchurch townships for a Presbyterian minister. Settling in Markham Twp, he organized a congregation under the name of the "Presbyterian Church in Scarborough" in 1818. Led by Richard Thomson, Colin Drummond, Andrew Thomson and David Thomson, its members erected in 1819 the township's first church, a wooden frame building 10 m x 14 m, on land given by David Thomson. Riding 24 km on forest trails from his home to St. Andrew's Church, Wm Jenkins ministered to his Scarborough people for 15 years. In 1833 they built a manse for his successor, the Rev. James George, on land given by James A. Thomson; and in 1849 they erected this fine brick church.