Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
BAIRD
As described in historical dictionaries
Patronymica Britannica (1860)
BAIRD. Said to be the Scottish form of bard, or poet. Jamieson. This, however, ia doubtful as to the surname, which in North Britain is widely sjiread. Its principal modes of spelling have been Bard, Byrd, Bayard. The last supports the tradition of a derivation from the south of France, the country of the Clievalier Bayard, the knight sum K'ur, sans reproclie,
Surname type: Occupational name
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic