This appears to be a report from a professional genealogist. It was in the files of LaRae Mathews.
The practice of altering one’s name upon the occurrence of any remarkable event in his personal history seems to have been known in times of very remote antiquity.
A number of examples of this are to be found in the Bible, as Abram to Abraham, Saul to Paul, etc.
The new name was either assumed by the person himself, or granted by the Monarch.
In Thorp’s catalog of The Deeds of Battle of Abbey, the origin of the name Eyre is given as follows: “The first of this family was named Truelove, but at the battle of Hastings, October 14, 1066, William the Conqueror was flung from his horse and his helmet beaten into his face, which Truelove observing pulled off and horsed him again. The Duke told him “Thou shall here-after from Truelove be called “Eyre” or (Air) because thou has given me the air of breath. After the battle, the Duke on inquiry respecting him found him severely wounded (his leg and thigh having been cut off) ordered him the utmost care and on his recovery gave him lands in Derby in reward for his services and the leg and thigh in armor cut off in heraldry couped for his crest.