As Minister for External Affairs, and a strong republican, MacBride was seen as instrumental in the repeal of the External Relations Act 1936, under which King George VI, proclaimed King of Ireland in December 1936, fulfilled the diplomatic functions of a head of state.
•
It attracted a diverse range of people from traditional Republicans such as Noel Hartnett and social democrats such as Dr. Noel Browne, who had been attracted to the party due to its commitment to fight Tuberculosis and Peadar Cowan, a former Labour Party executive member who had resigned in disgust due to the infighting within the Labour Party at the time.
After Connor's death in December 1955, the by-election for his Dáil seat was held on 29 February 1956 and won for Clann na Poblachta by his 21-year-old daughter, Kathleen O'Connor.
A National School teacher by profession, she was elected to Dáil Éireann as a Clann na Poblachta Teachta Dála (TD) for the Kerry North constituency at the Kerry North by-election on 29 February 1956, following the death of her father Johnny Connor.
Mick Fitzpatrick (1893–1968), Chief of Staff of the IRA and Clann na Poblachta politician