Lower, Mark A (1860) Patronymica Britannica: a dictionary of the family names of the United Kingdom. London: J.R. Smith. Public Domain.
HALDANE
As described in historical dictionaries
Patronymica Britannica (1860)
HALDANE. Ilalfdene, a name occurrino' in the Saxon annals, is considered by Ferguson to imply a Danish extraction on one side only — "half Dane." Hence perhaps the surname of the Scottish family. Among the tenants in chief in Norfolk, appears a Godwinus Haldein. Haldanus, Haldane, and other forms also occur in Domesd.. principally in the eastern counties.
Origin: Celtic
Region of origin: British Isles
Country of origin: Scotland
Religion of origin: Christian
Language of origin: Gaelic