1831 (MDCCCXXXI) ebile ngwaga wa go thoma ka Mokibelo, ngwaga wa bobedi ngwagengsome wa 1830s, ngwaga wa bomasometharo tee ngwagengkgolo wa Ngwagakgolo 19, le ngwaga wa bomakgolo seswai masometharo tee ngwagengkete wa Ngwagakete 2.