Tresael
Defined in 2 dictionaries — Bouvier (1914), Black's (1910)
Bouvier's Law Dictionary and Concise Encyclopedia
John Bouvier; revised by Francis Rawle · 1914
or TRESAYLE. The grandfather’s grandfather. 1 Bla. Com. 186.
Black's Law Dictionary
Henry Campbell Black, M.A. · 1910
L. Fr. A great-great-grandfather. Britt c. 119. Otherwise written "tresaiel," and "tresayle." 3 Bl. Comm. 186; Litt § 20.