Guilliams History, Family Crest & Coats of Arms
- Origins Available:
The origins of the Welsh name Guilliams go back to those ancient Celts known as the Britons that once occupied the hills and Moors of Wales. This old Welsh surname is from the personal name Gwilliam, which is a Welsh form of the name William.
The name was anciently found in Normandy, France where it was more often than not spelt Guillem and by the Conquest was often seen as Guillaume. 
Early Origins of the Guilliams family
The surname Guilliams was first found in Cardiganshire where the fist on record was David ap Gwilym, the celebrated Welsh bard. There are two thoughts as to his origin. The first claims that he was born at Bro Gynin in the parish of Llanbadarn Vawr, Cardiganshire, about 1340 and died there about 1400. He was buried in the abbey of Ystrad Flur in the same county. The second claims he was born near Llandaff, Glamorganshire in 1300, and to have died at the abbey of Talley, Carmarthenshire, in 1368. 
What is not in dispute is that his parents were Gwilym Gam, a descendant of Llywarch ab Brân, one of the fifteen tribes of North Wales, and Ardudful, sister of Llywelyn ap Gwilym Vychan of Emlyn. He took to studies in Italy and by the age of fifteen, he had returned to Wales where his satirical whit became famous.
He fell in love with Laura for whom he wrote 147 poems. In his lifetime, he is known to have written 262 poems which were collected and published in 1789. "Other poems by him have since been discovered among the manuscript collections of Welsh poetry in the Mostyn library. The British Museum possesses many manuscript copies of his poems. " 
At about the same time or perhaps earlier, John ap-Gwilym was Chancellor of St. David's in 1351. The name was also a forenames in East Cheshire. Gwilliam ap Griffith was listed as holding lands there in 1450. 
Important Dates for the Guilliams family
This web page shows only a small excerpt of our Guilliams research. Another 74 words (5 lines of text) covering the years 135 and 1351 are included under the topic Early Guilliams History in all our PDF Extended History products and printed products wherever possible.
Guilliams Spelling Variations
Welsh surnames are relatively few in number, but they have an inordinately large number of spelling variations. There are many factors that explain the preponderance of Welsh variants, but the earliest is found during the Middle Ages when Welsh surnames came into use. Scribes and church officials recorded names as they sounded, which often resulted in a single person's name being inconsistently recorded over his lifetime. The transliteration of Welsh names into English also accounts for many of the spelling variations: the unique Brythonic Celtic language of the Welsh had many sounds the English language was incapable of accurately reproducing. It was also common for members of a same surname to change their names slightly, in order to signify a branch loyalty within the family, a religious adherence, or even patriotic affiliations. For all of these reasons, the many spelling variations of particular Welsh names are very important. The surname Guilliams has occasionally been spelled Gwilliam, Gwuilliam, Guilliam, Gwilliams and others.
Early Notables of the Guilliams family (pre 1700)
More information is included under the topic Early Guilliams Notables in all our PDF Extended History products and printed products wherever possible.
Guilliams migration to the United States
In the late 19th and early 20th centuries, many people from Wales joined the general migration to North America in search of land, work, and freedom. These immigrants greatly contributed to the rapid development of the new nations of Canada and the United States. They also added a rich and lasting cultural heritage to their newly adopted societies. Investigation of immigration and passenger lists has revealed a number of people bearing the name Guilliams:
Guilliams Settlers in United States in the 19th Century
- T. Guilliams, aged 26, who landed in America, in 1895
- Henri Guilliams, aged 29, who landed in America from Antwerp, in 1898
Guilliams Settlers in United States in the 20th Century
- Jan Bapt. Guilliams, aged 35, who immigrated to America, in 1923
- ^ 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)
- ^ Smith, George (ed), Dictionary of National Biography. London: Smith, Elder & Co., 1885-1900. Print
- ^ Bardsley, C.W, A Dictionary of English and Welsh Surnames: With Special American Instances. Wiltshire: Heraldry Today, 1901. Print. (ISBN 0-900455-44-6)