Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
SPIER
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
Spere, to ask, to inquire; a word used formerly in Scotland and the north of Ireland. The name may be from spear, a long-pointed weapon used in war, and given for some exploit in battle, or taken from a sign over an inn. "John at the Spear."
Origin: English
Region of origin: British Isles
Country of origin: England
Religion of origin: Christian
Language of origin: English