Patrick Brennan was born in Moville, County Donegal, on November 12, 1908. Shortly afterwards his family, like so many others of that generation, moved from Ireland to make a new home for themselves in Glasgow. Their son Patrick attended St. Aloysius' College before entering the seminary of St. Peter at Bearsden. He was ordained on the traditional feast of Ss. Peter and Paul, 29th June, 1931, and appointed to the parish of St. Cuthbert, Burnbank for a short period of less than a year before going to St. Columba's in Glasgow until 1936. Then it was that he returned to Lanarkshire to spend the next four years in Our Lady and St. Anne's in Cadzow, Hamilton. In 1940 he moved to St. Augustine's, Coatbridge and so automatically became a priest of the Diocese of Motherwell at its formation on 29th May, 1947. It was there he received on 8th February, 1952 his first appointment as parish priest and took charge of the joint parishes of St. Catherine, Harthill, and Sacred Heart, Salsburgh.

Father Brennan had been ordained when he was only twenty-three years old so it is not surprising that one of his early priestly concerns was the Catholic Young's Men's Society and he devoted himself to building up strong and enthusiastic groups of young men who would be knowledgeable about their Faith and active in their religious profession. This he did in each parish where he ministered as an assistant priest.

To his charges as parish priest he brought the particular apostolate to the sick which remained a distinguishing feature of his ministry in both St. Mary's, Larkhall, to which he had been transferred in 1956 and All Saints', Airdrie, to which he went on 7th December, 1961.

Increasingly Father Brennan had been conscious that his own health had been deteriorating and in June 1965 he was granted a period of sick leave. It was a sick leave that eventually became a formal retirement. Father Brennan spent the last few years of his life quietly in Folkestone. It was there in the Church of Our Lady, Help of Christians, and St. Aloysius that his Requiem Mass was celebrated by his nephew, Father Gerard Mulligan C.Ss.R. assisted by Monsignor Conroy, Vicar General of the Diocese of Motherwell on 29th April 1982. R.I.P.