Bishop Delany founded the Brothers to educate the boys and people of his diocese in the faith and traditions of the Catholic Church. Under British rule for several centuries, the Catholic faith in Ireland had been suppressed by the British and thus near forgotten by the Irish.

From the small country town of Tullow, the Brothers reached out across Ireland and to every corner of the globe.
From Tullow to Los Angeles, from Aitape to Chennai, from Dormaa to Sydney, the Brothers travelled with their primary message Christus in Corde Omnium: Christ is in all people and in all of His creation.