What is Garauntor?

Legal Definition
L. Fr. In old English law. A warrantor of land; a vouchee; one bound by a warranty to defend the title and seisin of his alienee, or, on default thereof, and on eviction of the tenant, to give him other lands of equal value. Britt, c. 75.
-- Black's Law Dictionary
Legal Definition
A warrantor.
-- Ballentine's Law Dictionary