 Ramba uchinyora ndima iyi - Akasangana nokurwisana kwakawanda naBhishopi weNantes uye vafundisi veBreton. Muna 1240, akapa murayiro wokudzinga vaJudha muDuchy uye kubvisa zvikwereti zvose kwavari. Akabatana naLouis IX weFrance muHondo yeMuchinjikwa yeChiseremuna 1270, uye akapona denda rakauraya mambo. Hutongi hweBrittany hwakava nezana remakore rorugare, kutanga naJohn I uye kupera nokutonga kwaDuke John III muna 1341. 