Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
MAUNSELL
As described in historical dictionaries
Patronymica Britannica (1860)
MAUNSELL. "The curious poetical history of this family preserved in Collectanea Topogr. et Geneal. claims one Saher, there written " Slcr, the syer of vs all," as their ancestor ; he appears to have been the son of Ealph Maunsel, who was living in Buckinghamshire 14. Henry II. (1167)." Shirley's Noble and Gentle Men. The name is understood to signiiy a native of Maine, a province of France. The Irish branch left England temp. Elizabeth.