View source for John O'Hart

{{Short description|Irish historian and genealogist}}
{{Use dmy dates|date=October 2020}}
{{one source|date=March 2011}}
[[File:John-O-Hart-1892--Irish-Pedigrees.png|thumb|right|300px|A sketch of John O'Hart first published in Irish pedigrees; or, The origin and stem of the Irish nation (1892), by John O'Hart, - Volume: 1.]]
'''John O'Hart''' ({{Langx|ga|Seán Ó hAirt}}; 1824–1902) was an Irish historian and [[genealogy|genealogist]]. He is noted for his work on ancient Irish lineage.

He was born in [[Crossmolina|Crossmolina, County Mayo, Ireland]]. A committed [[Roman Catholic]] and [[Irish nationalist]], O'Hart had originally planned to become a priest but instead spent two years as a police officer. He was an [[Associate in Arts]] at the [[Queen's University, Belfast]]. He worked at the Commissioners of National Education during the years of the [[Great Famine (Ireland)|Great Famine]]. He worked as a genealogist and took an interest in Irish history. He died in 1902 in [[Clontarf (Ireland)|Clontarf]] near [[Dublin]], at the age of 78.

O'Hart's 800-page, ''The Irish and Anglo-Irish landed gentry'' (Dublin 1884), was reprinted in 1969, with an introduction by [[Edward McLysaght|Edward MacLysaght]], the first [[Chief Herald of Ireland]]. Another work, ''Irish pedigrees; or, The origin and stem of the Irish nation'', first published in 1876, has come out in several subsequent editions.{{cn|date=July 2020}}

To complete his genealogies he used the writings of [[Cú Choigcríche Ó Cléirigh]], [[Dubhaltach Mac Fhirbhisigh]] and O'Farrell, along with the ''[[Annals of the Four Masters]]'', for the medieval pedigrees. He used the works of [[Bernard Burke]], John Collins and others to extend his genealogies past the 17th century.{{cn|date=July 2020}}

==Stem of the Irish nation==
In his ''Irish Pedigrees'', O'Hart presents the legendary origins of the Irish people, from the Biblical Adam and Eve through the kings of ancient [[Ireland]]. Irish tradition holds that every Irish person is descended from the king [[Milesius]] who emigrated from [[Spain]] in approximately 1700 BC, according to the ''[[Annals of the Four Masters]]''. O'Hart started each of his genealogies with [[Adam (Bible)|Adam]], recording Milesius as his 36th descendant.

From the start; <br>
(1) [[Adam (Bible)|Adam]], his son<br>
(2) [[Seth]], his son<br>
(3) [[Enos (Bible)|Enos]], his son<br>
(4) [[Kenan|Cainan]], his son<br>
(5) [[Mahalalel|Mahalaleel]], his son<br>
(6) [[Jared (Biblical figure)|Jared]], his son<br>
(7) [[Enoch (ancestor of Noah)|Enoch]], his son<br>
(8) [[Methuselah]], his son<br>
(9) [[Lamech (father of Noah)|Lamech]], his son<br>
(10) [[Noah]], his son<br>
(11) [[Japhet]], his son<br>
(12) [[Magog (Bible)|Magog]], his son<br>
(13) [[Baath mac Magog|Baoth]], "to whom [[Scythia]] came has his lot", his son<br>
(14) [[Phoeniusa Farsaidh]] (Fénius Farsaid) King of Scythia, his son<br>
(15) [[Nel_(mythology)|Niul]], his son<br>
(16) [[Gaodhal]] (Gathelus), his son<br>
(17) [[Asruth]], his son<br>
(18) [[Sruth]] (who fled [[Egypt]] to [[Creta]]), his son<br>
(19) [[Heber Scut]] (returned to Scythia), his son<br>
(20) [[Beouman]], King of Scythia, his son<br>
(21) [[Ogaman]] King of Scythia, his son<br>
(22) [[King Tait|Tait]] King of Scythia, his son<br>
(23) [[Agnon (Irish legend)|Agnon]] (who fled Scythia by sea with the majority of his people), his son<br>
(24) [[Lamhfionn]] (who led his people to [[Götaland|Gothia]] or [[Getulia]], where [[Carthage]] was afterwards built), his son<br>
(25) [[Heber Glunfionn]], King of Gothia, his son<br>
(26) [[Agnan Fionn]] King of Gothia, his son<br>
(27) [[Febric Glas]] King of Gothia, his son<br>
(28) [[Nenuall]] King of Gothia, his son<br>
(29) [[Nuadhad]] King of Gothia, his son<br>
(30) [[Alladh]] King of Gothia, his son<br>
(31) [[Arcadh]] King of Gothia, his son<br>
(32) [[King Deag|Deag]] King of Gothia, his son<br>
(33) [[King Brath|Brath]], King of Gothia (who left Gothia with a large band of his people and settled in [[Galicia (Spain)|Galicia]], [[Spain]]), his son<br>
(34) [[Breoghan]], King of Galicia, [[Andalusia]], [[Murcia]], [[Kingdom of Castile|Castile]], and [[Portugal]], his son<br>
(35) [[Bile (Irish legend)|Bile]], King of Galicia, Andalusia, Murcia, Castile, and Portugal, and his son<br>
(36) [[Galamh]] (also known as [[Milesius]] of Spain), King of Galicia, Andalusia, Murcia, Castile, and Portugal.{{cn|date=July 2020}}

According to O'Hart's account, [[Milesius]] had four sons, [[Éber Finn|Heber]], Ir, [[Érimón|Heremon]], and [[Amergin Glúingel|Amergin]], who were involved, with their uncle Ithe, in the invasion of ancient [[Ireland]]; [[Milesius]], himself, had died during the planning. Amergin died during the invasion, without issue.{{cn|date=July 2020}} It is from the four other invaders —
[[Éber Finn|Heber]], [[Ir (Irish mythology)|Ir]], [[Heremon]], and [[Ithe]] — from whom the Irish are alleged to descend. These, according to O'Hart, are the four lines from which all true Irish descend. [[Conn of the Hundred Battles]] was a descendant of Erimon, and [[Brian Boru]] was descended from both Heber and Conn.{{cn|date=July 2020}}

==Sources==
Irish pedigrees; or, The origin and stem of the Irish nation (1892), by John O'Hart, is available in 2 volumes free on the [[Internet Archive]].

:''Irish pedigrees; or, The origin and stem of the Irish nation (1892), by John O'Hart, - Volume: 1''
:''{{URL|https://archive.org/details/irishpedigreesor_01ohar}}''

:''Irish pedigrees; or, The origin and stem of the Irish nation (1892), by John O'Hart, - Volume: 2''
:''{{URL|https://archive.org/details/irishpedigreesor02ohar}}''

Another book by John O'Hart is also available free on the Internet Archive.

:''The Irish landed gentry when Cromwell came to Ireland (1887), by John O'Hart;''
:''{{URL|https://archive.org/details/irishlandedgentr00ohar}}''

==External links==
*[http://www.geoghegan.org/clan/ancient.html Geoghegan family genealogy as compiled by John O'Hart]

{{Authority control}}

{{Irish genealogy}}
{{Celtic mythology (Mythological)}}

{{DEFAULTSORT:Ohart, John}}
[[Category:1824 births]]
[[Category:1902 deaths]]
[[Category:Celtic studies scholars]]
[[Category:Irish genealogists]]
[[Category:19th-century Irish historians]]
[[Category:People from County Mayo]]
[[Category:Date of birth missing]]
[[Category:Date of death missing]]