In 1939, he was elected to the Northern Ireland House of Commons as a Unionist member for Londonderry, City, which he represented until 1947.
In February 1944, Lowry commented while Parliament was in session that a local Orange Order Meeting Hall, which had been used by Catholics of the US Army after he had arranged it, would have to be fumigated.
His remarks, recorded in the minutes of the day,[2] attracted immediate criticism from fellow ministers, and Lowry was forced to write an apology to The Most Rev.
Dr Neil Farren, Bishop of Derry, two days later, though he was adamant that he had misunderstood the situation.
He resigned from the Government and from Parliament upon appointment as a Judge of the High Court of Northern Ireland in 1947,[4] as which he served until retiring shortly before his death.