Annie Mary Patricia Smithson, Irish novelist, poet and Nationalist, is born into a Protestant family in Sandymount, Dublin, on September 26, 1873.

Smithson is christened Margaret Anne Jane but takes the names Anne Mary Patricia on her conversion to Catholicism. Her mother and father are first cousins, and her father dies when she is young. About 1881 her mother marries her second husband, Peter Longshaw, who owns a chemical factory in Warrington, Lancashire, England. She dislikes her stepfather and refers to him always as Mr. Longshaw. There are five children of the second marriage.

Smithson abandons her ambition to become a journalist in order to train as a nurse and a midwife. She trains in London and Edinburgh, before returning to Dublin in 1900. In 1901 she takes up a post as district nurse in Millton, County Down. There she falls in love with her colleague Dr. James Manton, a married man. Deciding that a relationship is impossible, she leaves Millton in 1906. They keep up a correspondence until her conversion, when she burns his letters.

Smithson converts to Catholicism in March 1907 and becomes a fervent Republican and Nationalist. She becomes a member of Cumann na mBan and campaigns for Sinn Féin in the 1918 Irish general election.

Smithson takes the Republican side in the Irish Civil War and nurses participants in the siege at Moran’s Hotel. In 1922 she is imprisoned by Irish Free State forces and is rescued from Mullingar prison by Linda Kearns McWhinney and Muriel MacSwiney, posing as a Red Cross delegation. Her political views lead to her resignation from the Queen’s Nurses Committee and a move into private nursing. In 1924 she writes a series of articles on child welfare work for the Evening Mail newspaper, based on her work in tenements in the Dublin Liberties, one of the poorest areas of the city, where she continues to work until 1929.

Smithson is Secretary and Organiser of the Irish Nurse Organisation from 1929 to 1942. She writes for the Irish Nurses’ Magazine and edits the Irish Nurses Union Gazette.

In 1917 Smithson publishes her first novel, Her Irish Heritage, which becomes a best-seller. It is dedicated to those who died in the Easter Rising of 1916. In all, she publishes twenty novels and two short story collections. Other successful novels include By Strange Paths and The Walk of a Queen. Many of her works are highly romantic and draw on her own life experiences, with nationalism and Catholicism featured as recurrent themes. In 1944 she publishes her autobiography, Myself – and Others.

From 1932 onwards Smithson shares a house in Rathmines, Dublin, with her stepsister and her stepsister’s family. She dies of heart failure on February 21, 1948, at 12 Richmond Hill, Dublin, and is buried in Whitechurch, Dublin.

Smithson’s novels are featured in Brian Friel‘s 1990 play Dancing at Lughnasa. Between 1989 and 1990 the Mercier Press reprints several of her works.