Below is a nineteenth-century litany of the patron saints of the Irish dioceses which concludes with a selection of prayers in their honour and that of the missionary saints and anchorites of this country. There is a strong emphasis on the preservation of the faith and its spreading abroad. Published in 1867, just twenty years after the worst year of the Great Famine, Irish immigration to Britain, America and Australia made this missionary opportunity something of great importance to contemporary writers. There are a few points to note about the litany. First, the lives of some of our diocesan patrons remain frustratingly obscure, very little is known about Saint Munchin of Limerick or Saint Muiredach of Killala, to give but two examples. There is only one woman on the list, Saint Brigid of Kildare and one non-Irish saint, Nicholas of Myra whose general patronage of sailors has made him the specific patron of Galway. Our own sailor saint Brendan is credited here with the double patronage of both Ardfert and Clonfert. There is also a Litany of Irish Diocesan Patrons from 1920 at the blog here, it makes for some interesting comparisons.

LITANY OF THE PATRON SAINTS OF THE DIFFERENT DIOCESES OF IRELAND. 

LORD, have mercy on us, &c.
God the Father of heaven, &c.
Holy Mary, conceived without original stain, Pray for us.
St. Patrick, apostle of Ireland, Pray for us.
St. Bridget, patroness of Ireland, Pray for us.
St. Finbar, patron saint and first Bishop of Cork, Pray for us.
St. Munchin, patron saint and first Bishop of Limerick, Pray for us.
SS. Otteran and Carthagh, patron saints of Waterford and Lismore, Pray for us.
St. Colman, patron saint of Cloyne, Pray for us.
St. Fachanan, patron saint of Ross, Pray for us.
SS. Lawrence and Kevin, patron saints of Dublin, Pray for us.
St. Jarlath, patron saint of Tuam, Pray for us.
St. Malachy, patron saint of Armagh, Pray for us.
SS. Columbkille and Eugenius, patron saints of Derry, Pray for us.
St. Colman, patron saint and first Bishop of Dromore, Pray for us.
St. Albert, patron saint of Cashel, Pray for us.
SS. Conleath and Bridget, patron saints of Kildare, Pray for us.
St. Flannan, patron saint and first Bishop of Killaloe, Pray for us.
St. Ailbe, patron saint of Emly, Pray for us.
St. Mel, patron saint and first Bishop of Ardagh, Pray for us.
St. Eunan, patron saint and first Bishop of Raphoe, Pray for us.
St. Maccartin, patron saint and first Bishop of Clogher, Pray for us.
St. Felimy, patron saint of Kilmore, Pray for us.
SS. Laserian and Kyran, patron saints of Leighlin and Ossory, Pray for us.
St. Macnisius, patron saint and first Bishop of Connor, Pray for us.
St. Aidan, patron saint and first Bishop of Ferns, Pray for us.
St. Cailan, patron saint of Down, Pray for us.
St. Brendan, patron saint of Ardfert, Pray for us.
St. Brendan, patron saint of Clonfert, Pray for us.
St. Asicus, patron saint of Elphin, Pray for us.
St. Nicholas, patron saint of Galway, Pray for us.
St. Colman, patron saint of Kilmacduagh, Pray for us.
St. Nathy, patron saint of Achonry, Pray for us.
St. Muredach, patron saint of Killala, Pray for us.
St. Fachanan, patron saint of Kilfenora, Pray for us.

Let us Pray.

HOLY saints of Ireland, whose names are still in benediction in the dioceses where, in past ages, you exercised spiritual rule, intercede for the Irish, that they may retain and glory in the faith which St. Patrick preached to their forefathers.

O all ye holy martyrs of Ireland, still fondly revered in the land where you received the glorious crown of martyrdom, intercede for the children of Ireland, that the light of your deeds may be made known for the benefit of their souls.

O holy missionary saints of Ireland, whose names are renowned in the lands to which you bore the torch of faith, intercede for the children of Ireland, that they may be enabled to conduce to the spreading of that ever-glorious light, and so, like you, arrive at a happy eternity.

O all ye holy Irish anchorets, who, fearing the seductions of the world, secluded thyselves therefrom, obtain for the children of Ireland the grace to suffer cheerfully the loss of all earthly goods, rather than yield to the temptations unceasingly placed in their path to allure them from their allegiance to the faith of ages: through Christ, our Lord. Amen.

The Treasury of The Sacred Heart: A New Manual of Catholic Devotion (Dublin, 1867), 494-496.