Arthur, William (1857) An Etymological Dictionary of Family and Christian Names. New York: Sheldon, Blakeman. Public Domain.
LAIRD
As described in historical dictionaries
An Etymological Dictionary of Family and Christian Names (1857)
The same as Lord, from L, the, and ord or ??rd, Gaelic, supreme, high, eminence, highness; Lerad, Laird, from radh, Gaelic, saying, declaring, expressing, affirming an adage or proverb; giving or uttering law, from the verb abair. (See Lord.)
Patronymica Britannica (1860)
LAIRD. The Scottish form of Lord.
Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic