St Luke's, Douglas
Serving the communities of Douglas and Rochestown.
1786 Douglas founded as Chapel of Ease to Carrigaline
1875 Douglas became separate parish
1875 Present St Luke's consecrated

The present church is an attractive building of early English architectural style. Within the walls are the remains of the earlier church and a contemporary illustration in the church shows that it was simpler and smaller building. The nave was lengthened in 1885 and the large west window added. The spire, with its attractive clock which tolls on the hour, was added a few years later. The church is surrounded by an extensive graveyard which includes many interesting graves including the plot of the Arnott family and that of the antiquarian Dr. Richard Caufield. At the entrance to the graveyard, you will find the sexton’s lodge. The church contains some interesting stained glass including recently discovered windows designed by William Burges.

St Michael's, Blackrock
Serving the communities of Blackrock, Mahon, Ballinure, Ballinlough, and Ballintemple. This is the only parish in the union to be wholly within Cork City.
1828 Consecrated as a chapel of ease to St Fin Barre's Cathedral.
1873 It became a separate parish in its own right.
1987 became part of Douglas Union.

St. Michael’s was built in 1827 at a cost of £2,100. On January 29th1836 the spire was struck by lightning and substantially damaged. There is a contemporary illustration and description of this event in the church vestry. In the entrance porch, there is a large plaque giving the names of all the former rectors of the parish. These include Rev. Dr. John Gregg who became Bishop of Ossory and successively Archbishop of Dublin and Armagh, Rev. Hedley Webster, later Bishop of Killaloe and Rev. Michael Mayes, currently Bishop of Limerick. There is a memorial plaque to the famous mathematician George Boole in the south transept and he is buried in the graveyard. A monument carved by John Hogan in memory of William Beamish can also be seen inside the church.The architect Sir Thomas Deane and his wife Elizabeth are also buried nearby.

St Mary's, Marmullane
Serving the community of Passage West.
Founded as perpetual cure under St Fin Barre's Cathedral patronage, it is the oldest parish and church in Douglas Union.
1591 earliest record of an incumbent (Rev. Mauricus McDermot)
1684 present church built.
1838 – 39 present church extended and side isle added.
1987 became part of Douglas Union.

Passage West has a long nautical history. Lieutenant Richard Roberts, under whose command the 'Sirius', which was the first steam ship to cross the Atlantic, is buried in an impressive family vault in the adjoining churchyard. The church contains attractive ‘box pews’ and the ceiling timbers have been richly painted with scriptural texts and other designs.

Holy Trinity, Frankfield
Serving the communities of Frankfield, Grange, and Donnybrook. Frankfield remains a trustee church and is not part of the Douglas Union, although its rector has been shared with Douglas Parish since 1920.
1838 Founded as Chapel of Ease to St Fin Barre's Cathedral and opened for worship on 1st July of that year.
1839 Holy Trinity, Frankfield consecrated
1920 Frankfield parish came under the care of the Rector of Douglas

Frankfield Church was built at a cost of £5000 by Samuel Lane of Frankfield House. It was designed by Sir Thomas Deane in the Georgian Gothic style. In 1865 the architect William Burges was given his first commission in Ireland to install a three light east window in a modified sanctuary in this church. It represents nine allegorical figures of the Virtues and is considered to be a very important example of his early work.