According to The Anglican Parish of St Andrew Christ Church, St Andrew's East:
Christ Church was founded in 1819, and constructed on a site donated by Sir John Johnson, Seigneur of St Andrew's. A brick building, it initially contained 34 pews, including a Seigneurial pew. A sanctuary was added in 1826, a bequest of Lt. Col. George Taylor, whose body was entombed beneath the altar. (The chancel was subsequently extended, so the vault containing the body must now lie beneath the entrance to the Chancel.)
The parish of St Andrew was actually erected in 1822 by Letters Patent issued under the authority of King George IV.
The first rector, Joseph Abbott, was the father of Sir John Abbott, first Canadian-born Prime Minister, who was baptized in Christ Church.
The third rector, Richard Lonsdell, was the first Archdeacon of St Andrew's, a title which continues today in the Archdeaconry of St Andrew's.
Christ Church is the oldest Anglican church in the Laurentians, and the mother church of Holy Trinity, Lakefield, St Matthew's, Grenville, St Simeon's, Lachute, Holy Trinity, Hawkesbury, and St James', Hudson.