Boan History, Family Crest & Coats of Arms
The name Boan came to England with the ancestors of the Boan family in the Norman Conquest of 1066. The Boan family lived in Sussex. Their name, however, does not refer to that area, but to their former place of residence, the town of Bohun, in the French maritime department of La Manche, in western Normandy. 
Early Origins of the Boan family
The surname Boan was first found in Sussex. Humphrey with the Beard (died c. 1113) was a Norman soldier and nobleman fought in the Norman Conquest of England of 1066 and is the earliest known ancestor of the de Bohun family. 
He had three sons: Robert de Bohun, who had no issue; Richard de Bohun, progenitor through the female line, of the Bohuns of Midhurst; and Humphrey I de Bohun (died c.1123) who through marriage became "the founder of the fortunes of his family." His son, Humphrey II de Bohun (died 1165) continued the lineage. His son, Henry de Bohun (1176-1220), was the 1st Earl of Hereford and Hereditary Constable of England from 1199 to 1220. 
"Humphrey de Bohun, Earl of Hereford, inheriting the honour of Essex from his mother, Maud, sister and heiress of William de Mandeville, last Earl of Essex, was created Earl of that county by Henry III., and in a few years after stood sponsor for Prince Edward. In 1250, he assumed the cross, and proceeded to the Holy Land, and in the great content between the King and the Barons, fought under the banner of the latter, in whose army his son Humphrey was one of the most distinguished leaders, and commanded the infantry at the Battle of Evesham. " 
Early History of the Boan family
This web page shows only a small excerpt of our Boan research. Another 156 words (11 lines of text) covering the years 1176, 1220, 1215, 1275, 1298, 1342, 1373, 1368, 1394, 1587, 1660, 1645, 1699, 1698 and are included under the topic Early Boan History in all our PDF Extended History products and printed products wherever possible.
Boan Spelling Variations
Multitudes of spelling variations are a hallmark of Anglo Norman names. Most of these names evolved in the 11th and 12th century, in the time after the Normans introduced their own Norman French language into a country where Old and Middle English had no spelling rules and the languages of the court were French and Latin. To make matters worse, medieval scribes spelled words according to sound, so names frequently appeared differently in the various documents in which they were recorded. The name was spelled Bohon, Bohun, Bone, Boon, Boone, Bohan, Bound and many more.
Early Notables of the Boan family (pre 1700)
Outstanding amongst the family at this time was Humphrey VII de Bohun (d. 1298), 3rd Earl of Hereford and 2nd Earl of Essex, who, along with Roger Bigod, Earl of Norfolk, led the barons in opposition to King Edward I; Humphrey de Bohun (1342-1373), 7th (and last) Earl of Hereford, 6th Earl of Essex and 2nd Earl of Northampton; and Mary de Bohun (c.1368-1394), who was the...
In the United States, the name Boan is the 12,269th most popular surname with an estimated 2,487 people with that name. 
Migration of the Boan family to Ireland
Some of the Boan family moved to Ireland, but this topic is not covered in this excerpt.
Because of this political and religious unrest within English society, many people decided to immigrate to the colonies. Families left for Ireland, North America, and Australia in enormous numbers, traveling at high cost in extremely inhospitable conditions. The New World in particular was a desirable destination, but the long voyage caused many to arrive sick and starving. Those who made it, though, were welcomed by opportunities far greater than they had known at home in England. Many of these families went on to make important contributions to the emerging nations of Canada and the United States. Analysis of immigration records indicates that some of the first North American immigrants bore the name Boan or a variant listed above:
Boan Settlers in United States in the 19th Century
Boan Settlers in United States in the 20th Century