Civil parish of Castleknock

What is now the parish of Castleknock was granted to Hugh Tyrrel by Hugh de Lacy, Lord of Meath. Copies of the grant were discovered in the London Public Records Office in 1933 by Eric St. John Brooks.^[4] In English, the grant reads:

Henry, by the grace of God, King of England, Lord of Ireland, Duke of Aquitaine and Normandy and Count of Anjou to the Archbishops, Bishops, Ministers and all Earls, Barons, Justices, Sheriffs, Ministers and all his faithful French, English and Irish, greeting. Know that I have conceded, given, and by present Charter confirmed to Hugh Tirel, the man of Hugh de Lacy, Thwothyn and Thwothrom.^[5]

Brooks deduces that "Thwo" is an Anglicisation of the Gaelic word túath and that "throm" is an Anglicisation of the word droma which means ridge or hill - a possible reference to the hill of Castleknock where Tyrrell was to build his castle.^{[citation needed]}

Townlands in the civil parish of Castleknock:^{[l 2]}

• Not to be confused with Huntstown in Mulhuddart.

Civil parish of Chapelizod

Chapelizod contains a single townland of the same name. However, 465 acres are within the walls of the Phoenix Park while the village proper, outside the walls, contains only 67 acres. It is the only part of the barony that is not within the modern county of Fingal. It is administered by Dublin City Council.

Civil parish of Cloghran

The parish of Cloghran consists of three townlands.^{[l 3]} Most of the land in the parish is taken up with the "Ballycoolen Industrial Estate".

Civil parish of Clonsilla

Townlands in the civil parish of Clonsilla:^{[l 4]}

Note 1 The largest population centre in Castaheany / Hansfield is Ongar.

Civil parish of Finglas

The 34 townlands of the parish of Finglas are split among two baronies.^{[l 5]} The core village and two smaller parcels of land - exclaves of the village - lie in Castleknock. An additional exclave lies in Nethercross.

• Trading estate in the townland of Ballyboggan South
• Ballygall House in the townland of Ballygall
• Old N2 road at the townland of Balseskin
• Breaker's yard in the townland of Cardiffsbridge
• Garda station in the townland of Cardiffscastle
• Charlestown Shopping Centre in the townland of Charlestown
• Old N1 road at the townland of Coldwinters
• Bridge in the townland of Kilreesk
• Old N2 road at the townland of Kilshane
• Seamus Ennis plaque in the townland of Jamestown Little
• IKEA store in the townland of Poppintree
• Prospect apartment blocks in the townland of Tolka

Civil parish of Mulhuddart

Mulhuddart has 22 townlands, including:^{[l 6]}

Civil parish of Saint James'

The bulk of Saint James' parish^{[l 7]} lies south of the River Liffey. A single townland, situated north of the river in the Phoenix Park, is part of the barony of Castleknock.

• Saint James' (part of Phoenix Park);^{[5 1]} the eastern part containing the Magazine Fort, the Zoological Gardens, the Wellington Monument and the Criminal Courts of Justice.

Civil parish of Saint Judes'

The bulk of Saint Judes'^{[l 8]} parish lies south of the River Liffey. A single townland, situated north of the river, is part of the barony of Castleknock. It was carved out of the parish of Saint James'.

• Longmeadows^{[4 2]} which is the strip of land between the Park walls and the river from its narrowest pinch point to Islandbridge on the South Circular Road.

Civil parish of Ward

Townlands in the parish of Ward: Cherryhound, Irishtown, Killamonan, Newpark, Spricklestown, Ward Lower and Ward Upper.^{[l 9]}