The surname Troy is anglicised from the following surnames:
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Brennan is an Irish surname which is an anglicised form of two different Irish-language surnames: Ó Braonáin and Ó Branáin. Historically, one source of the surname was the prominent clan Ua Braonáin (O'Brennan) of Uí Duach (Idough) in Osraige who were a junior Dál Birn sept stemming from a younger son of Cerball mac Dúnlainge (d.888). Recent surname evaluations highlighted the geographic consistency of this lineage in the barony of Idough. However, based on the ultimate authority of Dubhaltach Mac Fhirbhisigh they are out of Ui Dhuinn (O’Dunn) and, therefore, an Uí Failghi tribe, not Osraige. While it is clearly apparent that O’Hart's pedigree is erroneous, it is suggested that Ó Cléirigh probably became confused while transcribing from Mac Fhirbhisigh. This is echoed by the modern scholar, Bart Jaski.
Brophy is an Irish surname of ancient origin, which is derived from the Irish "Uí Bhróithe" or "Ó Bróithe" septs that were located mostly around Ballybrophy, Laois, and in counties Carlow and Kilkenny. The family has been prominent in the history of Ireland for nearly 1000 years and has included petty kings (Rí), clerics, soldiers, and writers. The family was first mentioned in the late 11th century, but as a member of the Dál Birn dynasty, its semi-legendary genealogy stretches back to AD 200 according to the Bodleian Library, MS Rawlinson B 502. As such, it remains one of Ireland's oldest extant pre-Norman Conquest noble families, being related to the kings of Osraige and the Fitzpatrick dynasty as represented by the Earl of Upper Ossory, Baron Upper Ossory, and Baron Castletown.
Dempsey is a surname of Irish origin.
Naughton is an Irish Gaelic surname derived from the name Ó Neachtain meaning 'descendant of Nechtan'. A Sept of the Dal gCais of the same stock as Quinn and Hartigan where located in Inchiquin Barony, County Clare.
Curtin is a surname which is most common in the Province of Munster in Ireland. It takes several variant forms transliterated from the Irish language, such as: Mac Cruitín, Mac Curtain or Ó Cruitin, most of which are anglicised as Curtin. The literal translated meaning of the Irish elements of the name are Mac + Cruit + -ín, hence Little Hunchback, or Little Crooked One, but also Son of the Harp, or One associated with the art of the Irish Harp, which ties in with a traditional role in Gaelic culture. It is believed there are multiple Curtin families with different origins, the most famous of which is the bardic family which stems from Co. Clare. In the census of 1659 in Counties Cork, Kerry and Limerick similar sounding names such as Mac Curatine and O' Curataine were treated as synonymous although they are not the same clan. Curtayne is a variant surname chiefly in south Munster.
Crotty are anglicisations of the Irish name Ó Crotaigh – ‘Descendant of Crotach’. The name dates from medieval times, to the pre-Norman kingdom of Thomond where the Dál gCais clan, centred on the regional rulers – the Uí Briain (O'Brien) family – were dominant. The Crottys were one of eight septs of the O’Briens. They settled in western County Waterford and eastern County Cork.
Dooley is an Irish surname. It is derived from the Gaelic Ó Dubhlaoich meaning 'descendant of Dubhlaoch', a given name composed of the elements dubh 'Black, pale' and laoch 'warrior, Champion. Champions later called Knights .
Curry is a common surname used in Ireland, Scotland and England. Currey is a less common variant. In England and Scotland, is it thought to derive from local place names and, in Scotland, also possibly from MacMhuirrich.
The family name Whelan is an anglicisation of the Irish surname Ó Faoláin. The surname originates from the Middle Irish Úa Faeláin the name of the 10th to 11th century ruling dynasty of the Déisi, a population group inhabiting the area of the modern county of Waterford and County Kilkenny in the early medieval period.
Lyons is a surname with several origins. It is the name of an eminent Anglo-Norman family that is descended from Ingelram de Lyons, Lord of Lyons, who arrived in England with the Norman Conquest, and from his relation, Nicholas de Lyons, who emigrated from Normandy to England in 1080 and was granted lands at Warkworth, Northamptonshire by William of Normandy. The family originated in the district of the Forest of Lyons, north of the town of Lyons-la-Forêt, in Norman Vexin, where their seat was the Castle of Lyons. The original surname was 'de Lyons' : subsequently, the 'de' was removed from the name, and some branches removed the 's' from the end of the word, producing 'Lyon'.
Leahy is an Irish surname, originating in Munster, and now found in counties Cork, Kerry, Limerick, and Tipperary.
Mitchel Troy is a village and community in Monmouthshire, south east Wales, in the United Kingdom. It is located 3 miles south west of the county town of Monmouth, just off the A40 road leading towards Raglan. Settlements within the community include Tregare, Dingestow, Cwmcarvan and Wonastow.
Crowley is an English and Irish surname, which was traditionally pronounced in English but is now often pronounced. In England, it is a habitational surname, meaning referring to someone who lived in or nearby a meadow of crows.
Mullally, Mulally, Mullaly or Mulaly are anglicized variants of the Irish language surname Ó Maolalaidh thought to have originated from County Galway where it has since been shortened to the form of Lally.
Fogarty is a surname of Irish origin. The name Fogarty in Ireland is derived from the native Irish Ó Fogartaigh Sept who were located in County Tipperary where the name is still very prevalent to this very day.
The surname McDonagh, also spelled MacDonagh is from the Irish language Mac Dhonnchadha, and is now one of the rarer surnames of Ireland.
Fay is an Irish surname that also arose independently in France. There are different theories about the origin and meaning of the surname.
Drennan is a surname of Irish origin. Variations of the name are found primarily in Ireland, Scotland, and the United States. The surname is purportedly derived from the Gaelic Ó Droighneáin, Ó Draighnáin, or Ua Draighnen, meaning "descendant of Draighnen", or "descendant of blackthorn". Variant spellings include Drennen, Drenning, Drennon, Drinan, Drinnan, Drinnon, and Drynan. Thornton is another Anglicized surname from the same original Gaelic form.
Ó Troighthigh is a Gaelic-Irish surname, meaning descendant of foot-soldier.
de Troyes is an Anglo-Norman toponymic surname which originated in Troyes, France and Mitchell Troy, Wales.