Patrick Augustine Sheehan (17 March 1852 – 5 October 1913) was an Irish Catholic priest, author and political activist. He was usually known as Canon Sheehan after his 1905 appointment as a canon of the diocese of Cloyne, or more fully as Canon Sheehan of Doneraile, after the town of Doneraile where he wrote almost all of his major works and served as parish priest.
Patrick Augustine Sheehan was born on St Patrick's Day, 1852, at 29 New Street in Mallow in the north of County Cork. Third eldest of five children born to Patrick Sheehan, owner of a small business, and to Joanna Regan, he was baptised by The Very Reverend Dr. John McCarthy, the sponsors being Timothy Cronin and Mary Ann Relehan.
As a child, Sheehan was fair-haired and delicate with "large wistful blue eyes". He was described as "a bit of a dreamer, and when other lads were shouting at play, he went alone to some copse or thicket, and with a book, or more often without one, would sit and think, and look dreamily at floating clouds or running stream; and then, with a sigh go back to his desk".
Sheehan's father died on 13 July 1863 and his mother died on 6 February 1864. Following the loss of his parents, together with his three surviving siblings, he became the ward of the Parish Priest of Mallow, Dr. John McCarthy who later became Bishop of Cloyne. Responsibility for the Sheehan household devolved on his older sisters Hannah and Margaret.
When Sheehan and his brother Denis (1854–1941), who subsequently joined the Civil Service, had been despatched to secondary school, his sisters entered the Convent of Mercy in Mallow. Margaret Sheehan made religious profession, as Sr. Mary Augustine, on her death-bed before completion of her novitiate. She died on 7 November 1868.
Hannah Sheehan was professed as Sr. Mary Stanislaus, and became Mistress of Schools at Mallow Convent but died young on 17 December 1871. John, the youngest of the family, died at the age of five.