HaganIrish Reduced Anglicized form of Gaelic Ó hÁgáin "descendant of Ógán", a personal name from a diminutive of óg "young".
HaganIrish Reduced Anglicized form of Gaelic Ó hAodhagáin "descendant of Aodhagán", a personal name formed from a double diminutive of Aodh meaning "fire".
HaggertyIrish (Anglicized) Anglicized version of Ó hEigceartaigh, which is from the word "eigceartach", which means unjust.
HallinanIrish Anglicized form of Gaelic Ó hÁilgheanáin "descendant of Áilgheanán", a pet form of a personal name composed of old Celtic elements meaning "mild, noble person".
HamillIrish According to MacLysaght, a shortened Anglicized form of Gaelic Ó hÁdhmaill "descendant of Ádhmall", which he derives from ádhmall "active".
HanafinIrish Shortened Anglicized form of Gaelic Ó hAinbhthín (modernized as Ó hAinifín) ‘descendant of Ainbhthín’, a personal name derived from ainbhíoth ‘non-peace’, ‘storm’.
HaneyIrish Derived from the Gaelic name Ó hEighnigh
HanleyIrish Means “descendant of Áinle.” Derived from “O’Hanley,” an anglicized form of “Ó hÁinle,” ultimately from Gaelic “ainle” meaning “beauty, grace.”
HanlonIrish Anglicized form of Gaelic Ó hAnluain "descendant of Anluan", a personal name from the intensive prefix an- and luan "light", "radiance" or "warrior". Occasionally it has been used to represent Hallinan.
HareIrish (Anglicized), English (American) Irish (Ulster): Anglicized form of Gaelic Ó hÍr, meaning ‘long-lasting’. In Ireland this name is found in County Armagh; it has also long been established in Scotland.... [more]
HealyIrish Southern Irish: reduced form of O’Healy, an Anglicized form of Gaelic Ó hÉilidhe ‘descendant of the claimant’, from éilidhe ‘claimant’, or of Gaelic Ó hÉalaighthe ‘descendant of Éaladhach’, a personal name probably from ealadhach ‘ingenious’.
HenleyEnglish, Irish, German (Anglicized) English: habitational name from any of the various places so called. Most, for example those in Oxfordshire, Suffolk, and Warwickshire, are named with Old English héan (the weak dative case of heah ‘high’, originally used after a preposition and article) + Old English leah ‘wood’, ‘clearing’... [more]
HennellyIrish From the Irish Ó'hIonnghaile, itself "descendant of (a variation of) Fionnghal" (fionn, "white, fair"; gall, "stranger")... [more]
HennesseeIrish A variant of the traditionally Irish surname Hennessey or Hennessy, an Anglicization of Ó hAonghusa meaning "descendant of Aonghus".
HerlihyIrish From Irish Gaelic Ó hIarfhlatha "descendant of Iarfhlaith", a personal name meaning literally "lord of the west".
HerrickIrish Anglicized form of Irish Ó hEirc "descendant of Erc", a byname meaning "speckled, spotted".
HestonEnglish, Irish Derived from Heston, a suburban area in West London (historically in Middlesex), or Histon, a village and civil parish in Cambridgeshire, England. It is either named with Old English hǣs meaning "brushwood" and tūn meaning "farmstead, settlement, estate", or from hyse "shoot, tendril, son, youth" and tūn... [more]
HewtonIrish I can only date it back to Armagh County, Ireland in the early 1800s.
HilleryEnglish, Irish Variant of Hillary. This surname has long been established in the county of Clare in Ireland. It was borne by the Irish president Patrick Hillery (1923-2008).
HowleyEnglish, Irish English habitational name from Howley in Warrington (Lancashire) or Howley in Morley (Yorkshire). The Lancashire name also appears as Hooley and Wholey while the Yorkshire placename comes from Old English hofe "ground ivy... [more]
HusseyEnglish, Irish As an English surname, it comes from two distinct sources. It is either of Norman origin, derived from Houssaye, the name of an area in Seine-Maritime which ultimately derives from Old French hous "holly"; or it is from a Middle English nickname given to a woman who was the mistress of a household, from an alteration of husewif "housewife"... [more]
HussieEnglish, Irish Variant of Hussey. A notable bearer is American webcomic author/artist Andrew Hussie (1979-).