Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
PEACE
As described in historical dictionaries
Patronymica Britannica (1860)
PEACE. If not from the personification of Peace in some medieval drama, jrobablj'' from a Christian name, like Faith, Charity, Honour, &c. Pax, without prefix, is found in H.R.
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic