1257 (MCCLVII) ebile ngwaga wa go thoma ka Mošupologo, ngwaga wa boseswai ngwagengsome wa 1250s, ngwaga wa bomasomehlano šupa ngwagengkgolo wa Ngwagakgolo 13, le ngwaga wa bomakgolo pedi masomehlano šupa ngwagengkete wa Ngwagakete 2.