Show ContentsO'Hart History, Family Crest & Coats of Arms

The Irish name O'Hart was originally written in a Gaelic form as O'h-Airt, which connotes a descendant of Art. 1

Specifically, the family claim descent through "Art Eanfhear, who is number 81 on the 'Line of Heremon," and son of the Monarch Conn of the Hundred Battles." He was at times called "The Solitary," as he was the only one of his father's sons that survived; his two brothers Conla Ruadh and Crionna, having been slain by their uncles. His grief was so strong that in some writings, he was referred to as "Art, the Melancholy." 2

The name literally means "a bear, a stone; noble, great, generous; hardness." 3

Early Origins of the O'Hart family

The surname O'Hart was first found in County Meath (Irish: An Mhí) anciently part of the kingdom of Brega, located in Eastern Ireland, in the province of Leinster, where they were of the southern Ui Neill. Before the Anglo-Norman invasion of the 12th century, their chiefs were known as the lords of Teffia.

Early History of the O'Hart family

This web page shows only a small excerpt of our O'Hart research. Another 117 words (8 lines of text) are included under the topic Early O'Hart History in all our PDF Extended History products and printed products wherever possible.

O'Hart Spelling Variations

People who were accounted for by scribes and church officials often had their name recorded many different ways because pronunciation was the only guide those scribes and church officials had to go by. This resulted in the problem of one person's name being recorded under several different variations, creating the illusion of more than one person. Among the many spelling variations of the surname O'Hart that are preserved in archival documents are Hart, O'Hart, Harte, MacArt, McArt, MacCart, McCart and many more.

Early Notables of the O'Hart family

Notable amongst the family name at this time was

  • the early O'Hart line who were lords of Teffia...

Migration of the O'Hart family

A great mass of Ireland's native population left the island in the 19th century, seeking relief from various forms of social, religious, and economic discrimination. This Irish exodus was primarily to North America. If the migrants survived the long ocean journey, many unfortunately would find more discrimination in the colonies of British North America and the fledgling United States of America. These newly arrived Irish were, however, wanted as a cheap source of labor for the many large agricultural and industrial projects that were essential to the development of what would become two of the wealthiest nations in the western world. Early immigration and passenger lists indicate many people bearing the O'Hart name: Daniel Hart who settled in Virginia in 1640; along with Elizabeth Hart in 1654; Henry Hart in 1637; James Hart in 1653; John Hart in 1635; Mary Hart in 1635.


Contemporary Notables of the name O'Hart (post 1700) +

  • John O'Hart (1824-1902), Irish author of "Irish Pedigrees," an interesting, but not always accurate history of Irish families, even though it is probably the best known Irish genealogical publication in the world


The O'Hart Motto +

The motto was originally a war cry or slogan. Mottoes first began to be shown with arms in the 14th and 15th centuries, but were not in general use until the 17th century. Thus the oldest coats of arms generally do not include a motto. Mottoes seldom form part of the grant of arms: Under most heraldic authorities, a motto is an optional component of the coat of arms, and can be added to or changed at will; many families have chosen not to display a motto.

Motto: Fortis et fideliter
Motto Translation: Brave and faithful.


  1. MacLysaght, Edward, The Surnames of Ireland. Ireland: Irish Academic Press, sixth edition, 1985. Print. (ISBN 0-7165-2366-3)
  2. O'Hart, John, Irish Pedigrees 5th Edition in 2 Volumes. Baltimore: Genealogical Publishing Company, 1976. Print. (ISBN 0-8063-0737-4)
  3. MacLysaght, Edward, Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-2364-7)


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