McDonald carried out many years of missionary work. He was then appointed Bishop of the Diocese Charlottetown, then comprising Prince Edward Island,
New Brunswick, and the
Magdalen Islands, on February 21, 1837. During his tenure in 1842, New Brunswick broke away to become its own diocese. Throughout his tenure as Bishop of Charlottetown, McDonald resided in Rustico, where he had also lived as a missionary. A church dedicated to
St. Augustine was built there in 1838 under McDonald's supervision and served its purpose for many years. There is still a St. Augustine's Church in Rustico today. In 1843, the second basilica for St. Dunstan's was built out of wood while McDonald was bishop. Realizing that the welfare of his priests in the Diocese was important, Bishop McDonald founded the St. Bernard's Society, which would provide for the care of the priests who became inactive due to old age, illness, or other reasons. This society was active until the 1960s. Although the Bishop closed
St. Andrew's College in 1844, he supervised the construction of St. Dunstan's College in Charlottetown (now part of the
UPEI campus) in 1848, which attended to the educational needs of boys and girls. In 1856 he spoke out against compulsory bible reading in the public schools. In 1857, McDonald was also responsible for bringing to the Island the first
Sisters of Notre Dame and opening a convent school for girls, which is now the modern-day Notre Dame Convent in
Charlottetown. Ill for some time, McDonald moved from Rustico to St. Dunstan's College shortly before his death. Following his death on December 30, 1859, a large funeral mass was held in Charlottetown, and the Bishop's remains were interred in his native home of St. Andrew's. ==See also==