n.1.A grandfather's grandfather.
Writ of tresayle
(O. Eng. Law) a writ which lay for a man claiming as heir to his grandfather's grandfather, to recover lands of which he had been deprived by an abatement happening on the ancestor's death.
- Mozley & W.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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