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An excerpt from www.HouseOfNames.com archives copyright 2000 - 2014

Where did the Irish Sinnott family come from? What is the Irish Sinnott family crest and coat of arms? When did the Sinnott family first arrive in the United States? Where did the various branches of the family go? What is the Sinnott family history?


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.

First found in County Wexford (Irish: Loch Garman), founded by Vikings as Waesfjord, and located in Southeastern Ireland, in the province of Leinster, in Ireland, where they held a family seat from very ancient times.


This web page shows only a small excerpt of our Sinnott research. Another 325 words(23 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 the United States in the 18th Century

  • Dennis Sinnott, who arrived in New York in 1789

Sinnott Settlers in the 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


  • Edmund Ware Sinnott (1888-1968), American botanist
  • Mikall "Mack" Sinnott (1880-1960), Canadian-born, American movie director, creator of the "Keystone Kops," recipient of and Academy Award, and an Academy Honorary Award
  • Michael Sinnott (1880-1960), American producer
  • Joe Sinnott (b. 1926), American comic book artist, best known for his work on Marvel Comics' Fantastic Four (1965-1981)
  • Nicholas John Sinnott (1870-1929), American Republican politician from the state of Oregon
  • John Sinnott (1829-1896), Irish recipient of the Victoria Cross
  • Kathy Sinnott, Irish disability rights campaigner and politician, member of the European Parliament (2004- )
  • Conor Sinnott (b. 1986), Irish footballer
  • Lee Sinnott (b. 1965), English former professional footballer and manager
  • Steve Sinnott (1951-2008), British General Secretary of the National Union of Teachers from 2004 to 2008



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. Leyburn, James Graham. The Scotch-Irish A Social History. Chapel Hill: UNC Press, 1962. Print. (ISBN 0807842591).
  2. Shaw, William A. Knights of England A Complete Record from the Earliest Time to the Present Day of the Knights of all the Orders of Chivalry in England, Scotland, Ireland and Knights Bachelors 2 Volumes. Baltimore: Genealogical Publishing. Print. (ISBN 080630443X).
  3. Bell, Robert. The Book of Ulster Surnames. Belfast: Blackstaff, 1988. Print. (ISBN 10-0856404160).
  4. Skordas, Guest. Ed. The Early Settlers of Maryland an Index to Names or Immigrants Complied from Records of Land Patents 1633-1680 in the Hall of Records Annapolis, Maryland. Baltimore: Genealogical Publishing Co., 1992. Print.
  5. Bullock, L.G. Historical Map of Ireland. Edinburgh: Bartholomew and Son, 1969. Print.
  6. Read, Charles Anderson. The Cabinet of Irish Literature Selections from the Works of the Chief Poets, Orators and Prose Writers of Ireland 4 Volumes. London: Blackie and Son, 1884. Print.
  7. Zieber, Eugene. Heraldry in America. Philadelphia: Genealogical Publishing Co. Print.
  8. Egle, William Henry. Pennsylvania Genealogies Scotch-Irish and German. Harrisburg: L.S. Hart, 1886. Print.
  9. MacLysaght, Edward. Irish Families Their Names, Arms and Origins 4th Edition. Dublin: Irish Academic, 1991. Print. (ISBN 0-7165-2364-7).
  10. Chadwick, Nora Kershaw and J.X.W.P Corcoran. The Celts. London: Penguin, 1970. Print. (ISBN 0140212116).
  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 11 June 2014 at 07:04.

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