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An excerpt from www.HouseOfNames.com archives copyright 2000 - 2016


The surname Sinnott was first found in County Wexford (Irish: Loch Garman), founded by Vikings as Waesfjord, and located in Southeastern Ireland, in the province of Leinster. "Descended from an honourable stock, of Norman extraction. They were possessed of lands in Ireland from the time of the Invasion, and in the county where they first found footing." [1] They claim descent from the Marquis of Lusignan, whose descendants came into England, at or soon after the Norman Conquest.

Names were simply spelled as they sounded by medieval scribes and church officials. Therefore, during the lifetime of a single person, his name was often spelt in many different ways, explaining the many spelling variations encountered while researching the name Sinnott. Some of these variations included: Sinnot, Sinnott, Sinnet, Sinnett, Sinot, Sinott and many more.


This web page shows only a small excerpt of our Sinnott research. Another 381 words (27 lines of text) covering the years 1172, 1344 and 1720 are included under the topic Early Sinnott History in all our PDF Extended History products.


More information is included under the topic Early Sinnott Notables in all our PDF Extended History products.


In the mid-19th century, Ireland experienced one of the worst periods in its entire history. During this decade in order to ease the pressure of the soil, which was actually depleted by the effects of the previous years' grain crops, landowners forced tenant farmers and peasants onto tiny plots of land that barely provided the basic sustenance a family required. Conditions were worsened, though, by the population of the country, which was growing fast to roughly eight million. So when the Great Potato Famine of the mid-1840s hit, starvation and diseases decimated the population. Thousands of Irish families left the country for British North America and the United States. The new immigrants were often accommodated either in the opening western frontiers or as cheap unskilled labor in the established centers. In early passenger and immigration lists there are many immigrants bearing the name Sinnott:

Sinnott Settlers in United States in the 18th Century

  • Dennis Sinnott, who arrived in New York in 1789

Sinnott Settlers in United States in the 19th Century

  • John Sinnott, who arrived in Philadelphia in 1808
  • John D Sinnott, aged 27, arrived in Maryland in 1812
  • James Sinnott, who came to Philadelphia in 1818
  • David Sinnott, who was naturalized in Ohio in 1822
  • Michael Sinnott, aged 38, arrived in Harford County, Maryland in 1830

Sinnott Settlers in Canada in the 18th Century

  • Edward Sinnott, who was on record in Torbay, Newfoundland in 1774

Sinnott Settlers in New Zealand in the 19th Century

  • Thomas Sinnott, aged 30, arrived in Auckland, New Zealand aboard the ship "Reiherstieg" in 1864
  • Elizabeth Sinnott, aged 32, arrived in Auckland, New Zealand aboard the ship "Reiherstieg" in 1864
  • Sarah Sinnott, aged 10, arrived in Auckland, New Zealand aboard the ship "Reiherstieg" in 1864
  • Edward Sinnott, aged 27, a miner, arrived in Wellington, New Zealand aboard the ship "Hindostan" in 1875
  • Annie Sinnott, aged 20, arrived in Wellington, New Zealand aboard the ship "Hindostan" in 1875


  • Lillian Sinnott (1890-1914), American actress of the stage who committed suicide after the death of her married lover, English actor Leslie Kenyon
  • William Sinnott (1886-1965), American police detective who was awarded a Congressional Gold Medal in 1940 in recognition of his service to President Franklin D. Roosevelt during an assassination attempt in 1933
  • Edmund Ware Sinnott (1888-1968), American botanist and prolific text book author
  • Mikall "Mack" Sinnott (1880-1960), Canadian-born, American movie director, creator of the "Keystone Kops," recipient of an Academy Award, and an Academy Honorary Award
  • Nicholas John Sinnott (1870-1929), American Republican politician from the state of Oregon
  • Joe Sinnott (b. 1926), American comic book artist, best known for his work on Marvel Comics' Fantastic Four (1965-1981)
  • Edward J. Sinnott, American Democrat politician, Candidate for New York State Assembly from Bronx County 11th District, 1944
  • Brad Sinnott, American Republican politician, Alternate Delegate to Republican National Convention from Ohio, 2008
  • Barbara J. Sinnott, American Republican politician, Candidate for Presidential Elector for Massachusetts, 1972
  • Arthur F. Sinnott, American politician, Candidate for New York State Assembly 13th District, 1965, 1966



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: Sin not
Motto Translation: If not


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  1. ^ Lowe, Mark Anthony, Patronymica Britannica, A Dictionary of Family Names of the United Kingdom. London: John Russel Smith, 1860. Print.

Other References

  1. The Norman People and Their Existing Descendants in the British Dominions and the United States Of America. Baltimore: Genealogical Publishing, 1975. Print. (ISBN 0-8063-0636-X).
  2. Chadwick, Nora Kershaw and J.X.W.P Corcoran. The Celts. London: Penguin, 1970. Print. (ISBN 0140212116).
  3. Crozier, William Armstrong Edition. Crozier's General Armory A Registry of American Families Entitled to Coat Armor. New York: Fox, Duffield, 1904. Print.
  4. Rasmussen, Louis J. . San Francisco Ship Passenger Lists 4 Volumes Colma, California 1965 Reprint. Baltimore: Genealogical Publishing, 1978. Print.
  5. Burke, Sir Bernard. General Armory Of England, Scotland, Ireland and Wales. Ramsbury: Heraldry Today. Print.
  6. Bowman, George Ernest. The Mayflower Reader A Selection of Articales from The Mayflower Descendent. Baltimore: Genealogical Publishing. Print.
  7. Sullivan, Sir Edward. The Book of Kells 3rd Edition. New York: Crescent Books, 1986. Print. (ISBN 0-517-61987-3).
  8. Robb H. Amanda and Andrew Chesler. Encyclopedia of American Family Names. New York: Haper Collins, 1995. Print. (ISBN 0-06-270075-8).
  9. Heraldic Scroll and Map of Family names and Origins of Ireland. Dublin: Mullins. Print.
  10. McDonnell, Frances. Emigrants from Ireland to America 1735-1743 A Transcription of the report of the Irish House of Commons into Enforced emigration to America. Baltimore: Genealogical Publishing, 1992. Print. (ISBN 0-8063-1331-5).
  11. ...

The Sinnott Family Crest was acquired from the Houseofnames.com archives. The Sinnott Family Crest was drawn according to heraldic standards based on published blazons. We generally include the oldest published family crest once associated with each surname.

This page was last modified on 16 December 2015 at 10:27.

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