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|Suburb of Dublin|
|Time zone||WET (UTC+0)|
|• Summer (DST)||IST (WEST) (UTC-1)|
|Area code(s)||01, +353 1|
|Irish Grid Reference||O191291|
Location and access
Mount Merrion is 3 kilometres (2 mi) southwest of the area known as Merrion and 5.6 km west of Dún Laoghaire. With its close proximity to University College Dublin at Belfield, many students live in the area.
The main artery through the area is the N11 dual carriageway.
The Aircoach services to Dublin Airport from Greystones calls at South Hill Avenue en route to the airport.
Mount Merrion the Old
Quoting from "Mount Merrion the Old", by Sir Neville Wilkinson:
Between the Convent of Mount Anville, above Dundrum, and the broad high road which leads to Stillorgan, rises the wooded hill of Mount Merrion, the centre of the landscape over Dublin Bay, which gradually becomes defined as the opalescent mists of the Irish sunrise fade away. It is a landscape known to every visitor to Ireland who has stood on deck as the Holyhead mail steamer passes the Kish lightship. Around the wood some 1.2 km² (300 acres) of the richest grazing land in County Dublin slope gently to the high stone wall which surrounds the demesne. To the south and south-west the horizon is bounded by the swelling outline of the Wicklow and Dublin Hills. To the north the long low line of the Mourne Mountains, 100 kilometres (60 mi) and more away, are clearly visible when recent rains have left the washed air clear, while the islands of Lambay and Ireland's Eye give an added beauty to the sea-scape which lies beyond the wind-blown causeway which leads on and up to the rhododendron covered slopes above the ancient castle of Howth. A double avenue of beech trees shades the roadway which runs, straight as a rule, for a full quarter of a mile to the entrance gates on the Stillorgan Road. This roadway, whose immaculate pebbled surface was raked daily, had a broad border of century old shaven turf, the pride of the Scottish gardener; so tended, brushed and rolled was it in those days that the most careless visitor would have hesitated to sully the velvety perfection of the surface with a profane foot. Yet the gardener, his voice, with its rich Highland brogue quivering with fury at the bare recollection, would tell how a distinguished citizen of Dublin, having ridden to pay his respects to his lordship, had, on departing, cantered gaily down the sacred border, divots flying from his horse's heels; so that the whole length was scarred and pitted with hoofmarks, as though the plague had passed over it, and it was only after months of patient labour that the unbroken serenity of the surface was restored. 
The lands originally came into the possession of the Norman Fitzwilliam family in the 14th century. The family was originally based in Dundrum having come to Ireland in the year 1210. In the 1900s, the lands were built up as a residential area.
The Fitzwilliams built Merrion Castle on lands which are today the property of the Sisters of Charity and St Mary's Home and School for the Blind. Merrion features on the 1598 map "A Modern Depiction of Ireland, One of the British Isles" by Abraham Ortelius as "Mergon".
By 1710 the castle was in such a bad state of repair that Richard, the 5th Viscount Fitzwilliam, selected 100 acres (0.4 km²) on which he built Mount Merrion House, surrounding the house by an 8-foot-high (2.4 m) granite wall. The house was completed in 1711 and served as a new seat by the 5th Viscount Fitzwilliam on the hill at Mount Merrion. The Fitzwilliam family left for England around 1726. Although the family no longer lived in Mount Merrion House, they retained possession of it, and rented the house out.
The next Fitzwilliam to take a major interest in Mount Merrion was Richard FitzWilliam, 7th Viscount FitzWilliam , who remained a bachelor all his life. It was he who willed £100,000 to build the Founders Museum in Cambridge, his former university. Prior to his death in 1816, he bequeathed his vast estates to his cousin, the 11th Earl of Pembroke. Mount Merrion was occupied for a time by Lord Herbert of Lea, and later by Sir Neville Wilkinson, from 1903 to 1914.
On first edition OSI Maps (early to mid 19th century) the townland is named 'Mount Merrion or Callary', and that name is still in evidenced by Callary Road which runs to the east of Foster Ave.
Deer Park was landscaped by the 5th Viscount Fitzwilliam. The park lands comprise the area behind the site of Mount Merrion House. The park is now open to the public. It was created in 1971 from a collection of open public spaces and some acquisitions of private land. The park contains both sporting facilities (soccer and Gaelic football pitches and Deerpark Tennis Club) and landscaped land for more informal pursuits. Its location and altitude also provide it with a great view of Dublin city towards the north, which is often used by photographers for panoramas and also by developers to assess the impact of development on the cityscape. Crowds also gather in Deerpark to look out at the annual Skyfest fireworks display around St. Patricks Weekend which is sometimes held in Dublin city centre. It can also be a good vantage point for observing the Northern Lights, also known as the Aurora Borealis, when they are visible in the Dublin area. There is also a view of parts of the Dublin mountains to the south. It is claimed that Strongbow's white stallion is buried somewhere in Deer Park.
"Perhaps the most interesting remaining part of the 18th century development is the landscape element. The present Deerpark is a public park to the west of the house and included a wooded area which corresponds exactly to the walled woodland area laid out with radial paths shown on the earliest map (1757). The position of the 'gazebo' is now a platform with an assembly of cut stone elements lying on the ground, the origin of the material is not known to me. I believe that the radial form of the landscape can still be detected and consider that this may offer scope for an exercise in landscape conservation." (from historical research, carried out by Denis Cogan, 1999)
The estate at Mount Merrion started to be sold off to property developers Mount Merrion Estates around 1925, as this area of Dublin rapidly built up with suburban housing in mid-20th century. Mount Merrion House itself was sold to the Catholic church in 1936. The main house was converted for use as a Catholic church, and a new church, the Church of St. Therese, was built alongside in 1956. Much of the house was demolished in the late seventies. However, the front block of the house was retained and a new community centre was built onto the back of it. The plans for recent construction work on the community centre originally involved demolition of the house, however the plans were amended due to protests. The stables survive, beside the church. The original granite gateway were salvaged and now stands as the entrance to Willow Park School on the Rock Road (ironically Willow Park's own original gateway on Booterstown Avenue was later removed). Part of the estate eventually became the prestigious men-only Fitzwilliam Lawn Tennis Club on Appian Way. These lands were part of the Fitzwilliam and later Pembroke Estates. Maps such as John Roque's (1760) and Barker's Estate Maps (1762) show much of what is now Deerpark as a formal walled garden and many of the prominent avenues and boundaries of the nearby Mount Merrion House lands form the basis of the present local road network.
See also: "Mount Merrion: 1711-2011", by local historian, Joe Curtis.
Deerpark now hosts sports such as football and tennis. The football pitches are used by Mount Merrion Youths Football Club and Kilmacud Crokes GAA club. The tennis club, established in 1976, is known as Deerpark Tennis Club. There is also ample space for informal leisure pursuits.
Deerpark Tennis Club
Deerpark Tennis Club is a community tennis club, founded in 1976. The club has six synthetic surface courts, all floodlit. Competitions are organised throughout the year including the Club Championships(August), Team Tennis, Captain's Prize, Club Nights and Christmas Turkey tournaments.
The club participates in the Dublin Lawn Tennis Council (DLTC) Leagues in the greater Dublin area. These include Winter League, Summer League, Floodlit & Senior Leagues.
Deerpark opened its new clubhouse in August 2010, which is looked after on a day-to-day basis by Head Coach/Centre Manager Ciaran Redmond. The club's Junior Tennis Programme features coaching, social competitions and league participation.
Mount Merrion Youths Football Club
Mount Merrion Youths Football Club is a community-based club. The club first represented Mount Merrion at the 1974 Community Games. In 2007 the club established its first representative all-girls team. All representatives of the club operate on a voluntary basis. The club proposes to build a flood lit all-weather pitch in the Deer Park. .
In 2005 the club recorded its biggest success to date when its under 18s representatives won the Leinster Football Association Youths' Cup.
Although there is no club in Mount Merrion, many of the residents play for Kilmacud Crokes. Crokes play their juvenile matches in Deer Park. Local school, Scoil San Treasa, promotes the playing of both football and hurling. Also deer park has recently opened up a new playground.
Notable Residents, Past and Present
Dermot Morgan - comic actor, Father Ted; PV Doyle - Hotelier; Dave Fanning - Radio Broadcaster; Norma Smurfit - once married to businessman Michael Smurfit; Éamon Ó Cuív - Politician; Bagatelle - 1970s/80s Pop group; Eamonn De Valera - Politician & co-Founder of the Irish Republic; Catherine Day - Irish civil servant, Secretary-General of the European Commission; Emma Donoghue - Author, Academy Award-nominated screenwriter; Aifric Campbell - Author;
-  Fitzwilliam family tree
-  - Details of proposed changes to the park
- Local community web site by the Mount Merrion Residents Association
- A local study of the Coat of Arms of the Herberts and the Fitzwilliams of Merrion