Source : Webster's Revised Unabridged Dictionary (1913)

Dataria \Da*ta"ri*a\, n. [LL., fr. L. datum given.] (R. C. Ch.)
   Formerly, a part of the Roman chancery; now, a separate
   office from which are sent graces or favors, cognizable in
   foro externo, such as appointments to benefices. The name is
   derived from the word datum, given or dated (with the
   indications of the time and place of granting the gift or
   favor).