IN RE WA-NA; REPUBLIC v. FIJOLI-NA; EX PARTE YAKUBU AND OTHERS Courts—High Court—Jurisdiction—Cause or matter affecting chieftaincy—Definition of "cause or matter affecting chieftaincy"—Whether High Court has jurisdiction to determine cause or matter affecting chieftaincy—Chieftaincy Act, 1971 (Act 370), ss.15 and 66—Courts Act, 1971 (Act 372), ss.52 and 113.