Definitions from Black's Law Dictionary: 2nd Edition and Ballentine's Law Dictionary as are available for each term in each dictionary.
  • Ballentine's Law Dictionary

    On the relation of; on the information of.

  • Black's Law Dictionary: 2nd Edition

    Upon relation or information. Legal proccedings which are instituted by the attorney general (or other proper person) in the name and behalf of the state, but on the information and at the instigation of an individual who has a private interest in the matter, are said to be taken "on the relation" (ex relatione) of such person, who is called the "relator." Such a cause is usually entitled thus: "State ex rei. Doe v. Roe," In the books of reports, when a case is said to be reported ex relatione, It Is meant that the reporter derives his account of it, not from personal knowledge, but from the relation or narrative of some person who was present at the argument.