Dative
Black's Law Dictionary · Henry Campbell Black, M.A. · 1910
Black's Law Dictionary
A word derived from the Roman law, signlfying "appointed by public authority." Thus, in Scotland, an executor-dative is an executor appointed by a court of justice, corresponding to an English administrator. Mozley & Whitley.
In old English law
In one's gift; that may be given and disposed of at will and pleasure.