Barrat History, Family Crest & Coats of Arms
When the Strongbownians arrived in Ireland, they encountered an established Irish system for creating hereditary surnames. However, like the Irish, the Anglo-Norman Strongbownians frequently had patronymic surnames, a form of surname that was formed from the name of the bearer's father, or another older relative. Therefore, since the Strongbownians' system was in many ways built on the same principles as the Irish, the two systems eventually attained a sort of merger. Since the Stronbownian's names often had Norman names which were French, diminutive suffixes, such as -ot, -et, -un, -in, or -el were added to the name of the bearer's father, or older relative. Another Norman way of creating a patronymic name was to use the prefix Fitz-, which was derived from the French word "fils," and ultimately from the Latin "filius," both of which mean son. The surname Barrat is derived from the personal name Berold. In Munster, the Gaelic form of the surname Barrat is Baróid, while in Connacht, the Gaelic form is Bairéid.
Early Origins of the Barrat family
The surname Barrat was first found in Lincolnshire, where Matthew Baret was recorded between 1150 and 1155. The Barret family was also established in the English counties of Nottinghamshire, Hertfordshire, Hampshire, Yorkshire and Essex. However, they joined Strongbow in his invasion of Ireland in 1172 at the invitation of the King of Leinster, Dermot McMurrough. Strongbow granted lands to the family in County Cork and County Mayo where they became staunchly Irish.
Patrick Barret (d. 1415), was an Irish ecclesiastic and judge, one of the canons of the Augustinian abbey of Kells in Ossory, was consecrated Bishop of Ferns in Wexford by the Pope at Rome in December 1400. 
Not all of the family emigrated to Ireland, but today the name is better known there than in England. By example, "the manor of Ashton, or Ashtorre Barrett, in [the parish of St. Dominick, Cornwall], belonged for many generations to the ancient family of Barrett; but on failure of male issue it passed with an heiress in 1707 to the family of Prestwood." 
Early History of the Barrat family
This web page shows only a small excerpt of our Barrat research. Another 91 words (6 lines of text) covering the years 1691, 1415, 1400, 1400, 1410, 1412, 1580, 1554, 1555, 1558, 1693, 1631 and 1713 are included under the topic Early Barrat History in all our PDF Extended History products and printed products wherever possible.
Barrat Spelling Variations
Medieval scribes and church officials spelled the names as they sounded, so a name was often spelled many different ways during the lifetime of a single person. The investigation of the origin of the name Barrat revealed many spelling variations including Barrett, Barret, Barett, Baret, Barratt, Barrat, Barat, Baratt, McWhadden and many more.
Early Notables of the Barrat family (pre 1700)
Notable amongst the family up to this time was Lord of Tirawley; Patrick Barrett (died 1415), an Irishman who held religious and secular high offices in Ireland, an Augustinian Canon at Kells Priory in County Kilkenny, Bishop of Ferns (appointed 1400), concentrated bishop at Rome (1400), Lord Chancellor of Ireland from 1410 to 1412.
John Baret or Barret (d. 1580?), was an English lexicographer...
In France, the name Barrat is the 3,250th most popular surname with an estimated 2,000 - 2,500 people with that name. 
During the middle of the 19th century, Irish families often experienced extreme poverty and racial discrimination in their own homeland under English rule. Record numbers died of disease and starvation and many others, deciding against such a fate, boarded ships bound for North America. The largest influx of Irish settlers occurred with Great Potato Famine of the late 1840s. Unfortunately, many of those Irish that arrived in Canada or the United States still experienced economic and racial discrimination. Although often maligned, these Irish people were essential to the rapid development of these countries because they provided the cheap labor required for the many canals, roads, railways, and other projects required for strong national infrastructures. Eventually the Irish went on to make contributions in the less backbreaking and more intellectual arenas of commerce, education, and the arts. Research early immigration and passenger lists revealed many early immigrants bearing the name Barrat:
Barrat Settlers in United States in the 17th Century
The British first settled the British West Indies around 1604. They made many attempts but failed in some to establish settlements on the Islands including Saint Lucia and Grenada. By 1627 they had managed to establish settlements on St. Kitts (St. Christopher) and Barbados, but by 1641 the Spanish had moved in and destroyed some of these including those at Providence Island. The British continued to expand the settlements including setting the First Federation in the British West Indies by 1674; some of the islands include Barbados, Bermuda, Cayman Island, Turks and Caicos, Jamaica and Belize then known as British Honduras. By the 1960's many of the islands became independent after the West Indies Federation which existed from 1958 to 1962 failed due to internal political conflicts. After this a number of Eastern Caribbean islands formed a free association. 
Barrat Settlers in West Indies in the 17th Century