Clem History, Family Crest & Coats of Arms
The history of the Clem name began with the ancient Anglo-Saxon tribes of Britain. The name is derived 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 Clem family
The surname Clem 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 Clem family
This web page shows only a small excerpt of our Clem 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 Clem History in all our PDF Extended History products and printed products wherever possible.
Clem Spelling Variations
Sound was what guided spelling in the essentially pre-literate Middle Ages, so one person's name was often recorded under several variations during a single lifetime. Also, before the advent of the printing press and the first dictionaries, the English language was not standardized. Therefore, spelling variations were common, even among the names of the most literate people. Known variations of the Clem family name include Clements, Clement, Clemens, Climer and others.
Early Notables of the Clem 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...
In the United States, the name Clem is the 3,724th most popular surname with an estimated 7,461 people with that name. 
Migration of the Clem family to Ireland
Some of the Clem family moved to Ireland, but this topic is not covered in this excerpt.
For political, religious, and economic reasons, thousands of English families boarded ships for Ireland, the Canadas, the America colonies, and many of smaller tropical colonies in the hope of finding better lives abroad. Although the passage on the cramped, dank ships caused many to arrive in the New World diseased and starving, those families that survived the trip often went on to make valuable contributions to those new societies to which they arrived. Early immigrants bearing the Clem surname or a spelling variation of the name include :
Clem Settlers in United States in the 18th Century
Clem Settlers in United States in the 19th Century