Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
RATTRAY
As described in historical dictionaries
Patronymica Britannica (1860)
RATTRAY. Derived from a barony of the same name in Perthshire. The first of the name on record is Alan de RatheriiT, who lived in the reigns of "William the Lion and Alexander II. B.L.G. The family still reside at Craighall, in the parish of Eattray.
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic