Clemetson History, Family Crest & Coats of Arms
The name Clemetson is of Anglo-Saxon origin and came from the given name Clement which means the son of Clement. The name is from Latin origin and applies to a mild or merciful individual. It gained popularity in Medieval Europe when it was borne by an early saint who was a disciple of St. Paul, and later when the name was used by several early popes.
Early Origins of the Clemetson family
The surname Clemetson was first found in Brecknock, in the Welsh princedom of Powys, located in the border country between Wales and England. A bearer of Clement is said to have arrived in the Norman Conquest of England with Bernard Newmarche. Together they later fought in Brecon where they conquered the Lordship of Caron; after this battle Clement was given land at Llangorse Lake and at Cathedine.
There is a record of a grant of these lands to Geoffrey Clement made at Westminster by Edward 1 on the 10th February 1290. There has also long been a family of this name in Oxfordshire, where record of the Knights Templar show William and Richard Clement in 1153, and Robertus Clemens in 1155. 
The name was "enormously popular in the 13th century. Hence as a surname itself and its variants will be immortalized in our directories." 
The Hundredorum Rolls of 1273 included: Eustace filius Clement, Oxfordshire; Hugh Clement, Cambridgeshire; Richard Clemence, Huntingdonshire; Matthew Clemens, Oxfordshire; Peter filius Clement, Salop (Shropshire); and Clemens Janitor, Norfolk. 
Later the Yorkshire Poll Tax Rolls of 1379 listed: Clemens Alius Elenoe; Johannes Clement; and Petrus Clementson as all holding lands as that time. 
In Scotland, "the following spellings all occur in 1684 (Parish): MacClymont, McClamont, McClamot, McClemen, McClement, MeClemin, McClymon, McCIymond, and McLymond, and Clymont. McClymonts are mentioned as farmers in Ayrshire in 1613. James McClymont, witness in Carrick, 1687."  The name is thought to have been "from Gaelic MacLaomuinn, 'son of Lamont.' In the Dean of Lismore's Book we find VcClymont along with Clynelymyn (i.e. Clan Lamont). M'Lagmanid 1358, MacLagmayn 1410, Mc Laiman 1802, M'Lawmane c. 1353." 
Early History of the Clemetson family
This web page shows only a small excerpt of our Clemetson research. Another 166 words (12 lines of text) covering the years 1162, 1210, 1233, 1273, 1379, 1489, 1685, 1742, 1258, 1594, 1660, 1660, 1508, 1570, 1508, 1572, 1626, 1797 and are included under the topic Early Clemetson History in all our PDF Extended History products and printed products wherever possible.
Clemetson Spelling Variations
Before English spelling was standardized a few hundred years ago, spelling variations of names were a common occurrence. Elements of Latin, French and other languages became incorporated into English through the Middle Ages, and name spellings changed even among the literate. The variations of the surname Clemetson include Clements, Clement, Clemens, Climer and others.
Early Notables of the Clemetson family (pre 1700)
Outstanding amongst the family at this time was Clement of Dunblane (d. 1258), a Dominican friar, and close associate of King Alexander II of Scotland, who was made Bishop of Dunblane; and Gregory Clement (1594-1660), an English Member of Parliament (MP) and one of the regicides of King Charles I, he was hanged, drawn and quartered at Charing Cross on 17 October 1660.
Margaret Clements or Clement (1508-1570), was a learned lady, whose maiden name was...
Migration of the Clemetson family to Ireland
Some of the Clemetson family moved to Ireland, but this topic is not covered in this excerpt.
A great wave of immigration to the New World was the result of the enormous political and religious disarray that struck England at that time. Families left for the New World in extremely large numbers. The long journey was the end of many immigrants and many more arrived sick and starving. Still, those who made it were rewarded with an opportunity far greater than they had known at home in England. These emigrant families went on to make significant contributions to these emerging colonies in which they settled. Some of the first North American settlers carried this name or one of its variants:
Clemetson Settlers in United States in the 18th Century