The three deacons who will be ordained are Gabriel Neal, Jacek Tuszkiewicz and Paul O’Reilly.
They all trained at the Redemptoris Mater Seminary in Dundalk, Co Louth.
The seminary was established in 2012 to form priests for the Neocatechumenal Way in Ireland.
The present seminary was opened in November 2016, however, with the growth in vocations the existing buildings have since been expanded.