NYAME v KESE alias KONTO Estoppel-Res judicata-Adjudication by chieftaincy tribunal - chieftaincy tribunals vested with jurisdiction to determine chieftaincy disputes- Whether final decisions of chieftaincy tribunals operating as resjudicata-Admission by plaintiff that family's previous claim to Sekyedumase stool determined against them by chieftaincy tribunals in 1946 and 1947-Whether plaint!fl entitled to reopen issue.