To put it in different words, the jurisdiction of a Court is determined by the plaintiffs claim as disclosed in the endorsement on the writ of summons cum statement of claim or as in the present case, originating summons cum its supporting affidavit and not the averments contained in the statement of defence or counter affidavit to the originating summons. That is to say, it is the claim of the plaintiff before the Court that has to be examined in ascertaining whether or not it falls within the jurisdiction conferred on the Court by the Constitution or Statute establishing the Court and prescribing its jurisdiction.
— O.F. Omoleye JCA. Amaechi V. The Governor of Rivers State & Ors. (CA/PH/342/2015, 8 May 2017)