 Nyorai kupfuurira kweiyi ndima - Muna August 1436 Mowbray akaperekedza Duke weGloucester parwendo rwokubvisa Calais, rakanga rakombwa naPhilip the Good, Duke weBurgundy. Rwendo urwu, urwo Mowbray akapa boka rake, rwaiva rumwe rwemauto makuru eEngland akaunganidzwa muzana remakore rechi15. Hondo yacho yakabudirira, uye Burgundy yakamanikidzwa kudzokera shure. Pana 13 September gore iroro, Mowbray akagamuchira nhaka yake, uye pakarepo akatanga nguva yakabatikana yakatsaurirwa kubasa roumambo. Muna 1437, zvichida nemhaka yokutsigirwa naGloucester, Mowbray akagadzwa kuva Warden weEastern March kwegore rimwe chete. Akanga asina ruzivo rwakawanda rwokuchamhembe kweEngland, asi akabhadharwa muhoro wehondo we5,000 kuti aite hondo yokurwisa vaScotland. 