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An excerpt from www.HouseOfNames.com archives copyright 2000 - 2015

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


Medieval scribes and church officials spelt names simply the way they sounded, which explains the various name spelling variations of the name Sinnett that were encountered when researching that surname. The many spelling 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 Sinnett research. Another 325 words (23 lines of text) covering the years 1172, 1344, and 1720 are included under the topic Early Sinnett History in all our PDF Extended History products.


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


Irish immigration to North American began in the late 18th century as many Irish families desired to own their own land. This pattern of immigration grew slowly yet steadily until the 1840s. At that time, a failed crop and a growing population in Ireland resulted in the Great Potato Famine. Poverty, disease, and starvation ravaged the land. To ease their pain and suffering the Irish often looked upon North America as a solution: hundreds of thousands undertook the voyage. Their arrival meant the growth of industry and commerce for British North America and the United States. For the individual Irishman, it meant survival and hope, and the opportunity for work, freedom, and ownership of land. The early immigration and passenger lists revealed many bearing the name Sinnett:

Sinnett Settlers in United States in the 17th Century

  • Alice Sinnett, who arrived in Maryland in 1677

Sinnett Settlers in Canada in the 18th Century

  • Ann Sinnett, who landed in Nova Scotia in 1750
  • Jane Sinnett, who arrived in Nova Scotia in 1750


  • Thomas P. Sinnett, American politician, Delegate to Democratic National Convention from Illinois, 1932, 1936, 1940 (alternate), 1944 (alternate), 1948 (alternate)
  • John A. Sinnett, American politician, Delegate to Republican National Convention from Ohio, 1868
  • H. Brooks Sinnett, American politician, Candidate for West Virginia State House of Delegates from Roane County, 1954
  • Lawrence C. Sinnett (1888-1962), American seaman, Medal of Honor recipient for his role in the United States occupation of Veracruz
  • Alfred Percy Sinnett (1840-1921), English author and theosophist


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. Zieber, Eugene. Heraldry in America. Philadelphia: Genealogical Publishing Co. Print.
  2. Sullivan, Sir Edward. The Book of Kells 3rd Edition. New York: Crescent Books, 1986. Print. (ISBN 0-517-61987-3).
  3. Chadwick, Nora Kershaw and J.X.W.P Corcoran. The Celts. London: Penguin, 1970. Print. (ISBN 0140212116).
  4. Robb H. Amanda and Andrew Chesler. Encyclopedia of American Family Names. New York: Haper Collins, 1995. Print. (ISBN 0-06-270075-8).
  5. Best, Hugh. Debrett's Texas Peerage. New York: Coward-McCann, 1983. Print. (ISBN 069811244X).
  6. Bullock, L.G. Historical Map of Ireland. Edinburgh: Bartholomew and Son, 1969. Print.
  7. Bell, Robert. The Book of Ulster Surnames. Belfast: Blackstaff, 1988. Print. (ISBN 10-0856404160).
  8. Kennedy, Patrick. Kennedy's Book of Arms. Canterbury: Achievements, 1967. Print.
  9. Vicars, Sir Arthur. Index to the Prerogative Wills of Ireland 1536-1810. Baltimore: Genealogical Publishing Co. Print.
  10. MacLysaght, Edward. Mores Irish Familes. Dublin: Irish Academic, 1982. Print. (ISBN 0-7165-0126-0).
  11. ...

The Sinnett Family Crest was acquired from the Houseofnames.com archives. The Sinnett 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 17 August 2015 at 08:11.

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