Following the completion of his studies at Charlottetown's St. Dunstan's College, McDonald travelled to the Grand Seminary of Montreal and was ordained in 1873.
[1] McDonald taught briefly at St. Dunstan's College and was a pastor in Kings County for nine years.
Many new churches were built throughout Prince Edward Island, St. Dunstan's College became affiliated with Université Laval[4] in Quebec City in 1892, and the Notre-Dame Convent for Girls flourished.
At this time, Father James Morrison, Vicar General of the Diocese, stepped in to take care of diocesan administration.
Bishop McDonald died at his Charlottetown residence in 1912[2] and his funeral took place at St. Dunstan's Basilica.