Show ContentsThomasen History, Family Crest & Coats of Arms

The roots of the surname Thomasen lie in the rugged landscape of Wales. Thomasen was a popular Medieval given throughout Europe, coming from the popular biblical name. It is ultimately derived from the Aramaic personal name meaning "twin." Prior to the Norman Conquest, this name was rarely found, but by the 13th and 14th centuries, it became extremely common in Britain.

Early Origins of the Thomasen family

The surname Thomasen was first found in Breconshire (Welsh: Sir Frycheiniog), a traditional county in southern Wales, which takes its name from the Welsh kingdom of Brycheiniog (5th-10th centuries), where the family claims descendance from Owen Glendower, Lord of Glyndwyrdwy, Prince of South Wales.

Early History of the Thomasen family

This web page shows only a small excerpt of our Thomasen research. Another 97 words (7 lines of text) covering the years 1613, 1633, 1654, 1656, 1665, 1677, 1683, 1689 and 1890 are included under the topic Early Thomasen History in all our PDF Extended History products and printed products wherever possible.

Thomasen Spelling Variations

Compared to other ancient cultures found in the British Isles, the number of Welsh surnames are relatively few, but there are an inordinately large number of spelling variations. These spelling variations began almost as soon as surname usage became common. People could not specify how to spell their own names leaving the specific recording up to the individual scribe or priest. Those recorders would then spell the names as they heard them, causing many different variations. Later, many Welsh names were recorded in English. This transliteration process was extremely imprecise since the Brythonic Celtic language of the Welsh used many sounds the English language was not accustomed to. Finally, some variations occurred by the individual's design: a branch loyalty within a family, a religious adherence, or even patriotic affiliations were indicated by spelling variations of one's name. The Thomasen name over the years has been spelled Thomas, Tomas, MacThomas, FitzThomas, Thomasett and others.

Early Notables of the Thomasen family

Prominent amongst the family during the late Middle Ages was Sir William Thomas of Folkington; Rt. Rev. William Thomas D.D. (1613-1689), a Welsh Anglican bishop, Dean of Worcester (1665-1683), Bishop of St...
Another 31 words (2 lines of text) are included under the topic Early Thomasen Notables in all our PDF Extended History products and printed products wherever possible.

Ireland Migration of the Thomasen family to Ireland

Some of the Thomasen family moved to Ireland, but this topic is not covered in this excerpt.
Another 81 words (6 lines of text) about their life in Ireland is included in all our PDF Extended History products and printed products wherever possible.


United States Thomasen migration to the United States +

Many people from Wales joined the general migration to North America in the 19th and 20th centuries, searching for land, work, and freedom. Like the many other immigrants from the British Isles, they made a significant contribution to the development of Canada and the United States. The Welsh and their descendents added a rich cultural tradition to the newly developed towns, cities, and villages. An investigation of the immigration and passenger lists has revealed a number of people bearing the name Thomasen:

Thomasen Settlers in United States in the 17th Century
  • Hendrick Thomasen, aged 14, who arrived in New Netherland(s) in 1655 1
Thomasen Settlers in United States in the 19th Century
  • Gertrude Thomasen, aged 34, who landed in New York, NY in 1869 1


The Thomasen 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: I dduw bo'r diolch
Motto Translation: To God be thanks.


  1. Filby, P. William, Meyer, Mary K., Passenger and immigration lists index : a guide to published arrival records of about 500,000 passengers who came to the United States and Canada in the seventeenth, eighteenth, and nineteenth centuries. 1982-1985 Cumulated Supplements in Four Volumes Detroit, Mich. : Gale Research Co., 1985, Print (ISBN 0-8103-1795-8)


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