Clendennin History, Family Crest & Coats of Arms
The Clendennin surname was taken on from the place name Glendonwyne, a parish of Westerkirk, Dumfriesshire, on record since the 13th century.   The name literally means "one who came from Glendinning (glen of the fair hill)." 
Early Origins of the Clendennin family
The surname Clendennin was first found in Dumfriesshire. "Douglas (Baronage) states that a charter was granted by John Macgill of that Ilk (de eodem) to Adam de Glendonwyn of all his part of the lands and beronies of Clifton and Merbotel in the shire of Roxburgh prior to 1286." 
Continuing from this source: "In 1313 Sir Adam obtained a discharge of all bygone feu-duties from Archibald Douglas, lord of Galloway, and in 1398 John of Glendonwyne and Symoun of Glendonwyne were two of the 'borowis' for the earl of Douglas's bounds of the West March, and Symon of Glendonwyn was hostage for Archibald, Earl of Douglas, 1408." 
Early History of the Clendennin family
This web page shows only a small excerpt of our Clendennin research. Another 253 words (18 lines of text) covering the years 1250, 1408, 1450, 1467, 1451, 1239, 1504, 1587, 1599, 1667, 1720, 1798, 1408, 1387, 1388, 1401 and are included under the topic Early Clendennin History in all our PDF Extended History products and printed products wherever possible.
Clendennin Spelling Variations
Spelling variations of this family name include: Glendinning, Glendowyn, Glendowyne, Glendonyn, Glendonwyn, Glendening, Glendon, Glenden, Glendin, Glendining, Glendinnin, Glendyning, Glendounn, Clendenning, Clendinning and many more.
Early Notables of the Clendennin family (pre 1700)
Notable amongst the family at this time was Matthew de Glendonwyn (d. 1408), late 14th and early 15th century bishop of Glasgow, elected to the see after the death of Cardinal Walter Wardlaw, his predecessor as bishop, elected sometime between Wardlaw's death in September and Matthew's first appearance as bishop-elect in December, consecrated some months after his election...
Migration of the Clendennin family to Ireland
Some of the Clendennin family moved to Ireland, but this topic is not covered in this excerpt.
Migration of the Clendennin family
Some of the first settlers of this family name or some of its variants were: Agnes Glendinning, who came to Barbados in 1663; John Glendining, who came to Maryland in 1673; Archibald and Miriam Clendenin, Scoth-Irish who arrived in Boston in 1718.