Erwin History, Family Crest & Coats of Arms
Among the the peoples of ancient Scotland, the first to use the name Erwin were the Strathclyde-Britons. Erwin was a name for someone who lived in the parish of Irving in the county of Dumfriesshire or from Irvine in Strathclyde. There are a variety of possible origins of the name and we will explore some of them here. One source claims the name was a "descendant of Erewine (sea friend); or one who came from Irvine (green river), in Ayrshire. " 
Another source postulates the name was from "Mac Heremon, 'Here-mon's Son.' Heremon was the seventh in descent from Milesius, and became monarch of all Ireland.  And another believes that Irwin was "the Irish form of Irvine. The singular Christian name Crinus, which prevails in the family of I. of Tanragoe, co. Sligo, is traditionally derived from Krynin Abethnas, the second husband of the mother of Duncan, King of Scotland." 
Early Origins of the Erwin family
The surname Erwin was first found in Ayrshire, at Irvine, a parish, in the district of Cunninghame, about 26 miles (W. S. W.) from Glasgow. "[Irvine] derives its name from the river on which it is situated, and appears to have attained a high degree of importance at a very early period. The inhabitants obtained from Alexander II. a charter conferring upon the town all the privileges of a royal burgh; and a charter confirming all previous grants was subsequently given to them by Robert Bruce, in recompense of their services during his wars with England in the reign of Edward I." 
Alternatively, the name was "from Irving, the name of an old parish in Dumfriesshire, There are many Irvings (or Irvines as most of the Dumfriesshire families spell the name) here." 
According to voice of tradition, the family descend from Duncan "the first of Eryvine," killed at the battle of Duncrub in 965. Other records show the earliest listed was William de Irwin, an armor bearer to King Robert the Bruce. He received a grant of lands encompassing the Forest of Drum, on the banks of the River Irvine. And it was here that he had Drum Castle built which would become the family seat of the Clan for centuries. The river originally was named Lar Avon, or West River.
Robert de Hirvine, ancestor of that previous William was mentioned in a Charter dated 1226 and he was at that time tenant of the Douglas Clan. From 1331-33 the family received further grants of land and by 1400 had become a very predominant family. The Chief of the Irvines lead his Clansmen in the Battle of Harlaw in 1511. Sir Alexander Irvine was slain there, and it was said of him: 'Gude Sir Alexander Irvine, The much renowned Laird of Drum.' 
"Washington Irving (1783-1859), the American author, was son of William Irving, a native of Shapinsay, Orkney." 
Early History of the Erwin family
This web page shows only a small excerpt of our Erwin research. Another 263 words (19 lines of text) covering the years 1057, 1376, 1324, 1331, 1332, 1411, 1602, 1587, 1323, 1976, 1411, 1752, 1759, 1762, 1763, 1769, 1455, 1658, 1411 and are included under the topic Early Erwin History in all our PDF Extended History products and printed products wherever possible.
Erwin Spelling Variations
Medieval Scottish names are rife with spelling variations. This is due to the fact that scribes in that era spelled according to the sound of words, rather than any set of rules. Erwin has been spelled Irwin, Erwin, Irvine, Irving, Urwin, Erwine, Ervin, Erwing, Ervynn, Ervine, Erwynn, Irwing, Irwryn and many more.
Early Notables of the Erwin family (pre 1700)
Notable amongst the family at this time was Adam Irvine, Burgess of Irvine in 1455, doubtless derived his surname from Aberdeenshire.
Sir Alexander Irvine of Drum (d. 1658), the Royalist, "was descended from William de Irvine, who was armour-bearer to Robert Bruce, and was rewarded for his devoted services by a grant of the forest of Drum, Aberdeenshire, at that time part of a royal forest. A grandson of William de Irvine (Sir Alexander) distinguished himself...
In the United States, the name Erwin is the 1,250th most popular surname with an estimated 24,870 people with that name. 
Migration of the Erwin family to Ireland
Some of the Erwin family moved to Ireland, but this topic is not covered in this excerpt.
Many Scots were left with few options other than to leave their homeland for the colonies across the Atlantic. Some of these families fought to defend their newfound freedom in the American War of Independence. Others went north to Canada as United Empire Loyalists. The ancestors of all of these families have recently been able to rediscover their roots through Clan societies and other Scottish organizations. Among them:
Erwin Settlers in United States in the 17th Century
Erwin Settlers in United States in the 18th Century
Erwin Settlers in United States in the 19th Century
Some of the first settlers of this family name were:
Erwin Settlers in Canada in the 19th Century
Emigration to Australia followed the First Fleets of convicts, tradespeople and early settlers. Early immigrants include:
Erwin Settlers in Australia in the 19th Century
Emigration to New Zealand followed in the footsteps of the European explorers, such as Captain Cook (1769-70): first came sealers, whalers, missionaries, and traders. By 1838, the British New Zealand Company had begun buying land from the Maori tribes, and selling it to settlers, and, after the Treaty of Waitangi in 1840, many British families set out on the arduous six month journey from Britain to Aotearoa to start a new life. Early immigrants include:
Erwin Settlers in New Zealand in the 19th Century
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: Candide et constanter
Motto Translation: Fairly and firmly.