Macken’s father, Walter Macken, Sr., formerly a carpenter, joins the British Army in 1915 and is killed in March of the following year at St Eloi. The family therefore has to rely on lodgers and a small service pension to sustain them.
Macken attends the Presentation Convent for Infants from (1918-1921), St. Mary’s, a Diocesan College where they train people who want to become priests (1923-1924), and Patrician Brothers both Primary and Secondary (1921-1922 and 1924-1934), where he takes his Leaving Certificate. He is writing short stories, novels, and plays in exercise books from the age of eight and carries on these works well into his teens.
Macken is originally an actor, principally with the Taibhdhearc na Gaillimhe in Galway, where he meets his wife Peggy, and The Abbey Theatre in Dublin. He also plays lead roles on Broadway in M. J. Molloy‘s The King of Friday’s Men and his own play Home Is the Hero. The success of his third book, Rain on the Wind, winner of the Literary Guild award in the United States, enables him to focus his energies on writing.
Macken also acts in films, notably in Arthur Dreifuss‘ adaptation of Brendan Behan‘s The Quare Fellow. He is perhaps best known for his trilogy of Irish historical novels Seek the Fair Land, The Silent People, and The Scorching Wind.
His son Ultan Macken is a well-known journalist in the print and broadcast media of Ireland, and wrote a biography of his father, Walter Macken: Dreams on Paper.