Facts: - issue: bouchard of castres catherine de vendome vii de vendome , count of vendome and - title: suo ' countess of vendome and of castres '' ' jure '' ' dame d'Epernon '' ' '' - mother: catherine d'artois - spouse: jean of castres vi de vendome , count of vendome and - death date: 30 may 1376 - father: jean ii de ponthieu , count of aumale - birth date: before 1336 - name: jeanne de ponthieu - birth place: france Based on these bullet points, write a short biography describing the life of joan of ponthieu , dame of epernon .
jeanne de ponthieu , dame d'Epernon , countess of vendome and of castres -lrb- '' jeanne de ponthieu , dame d'Epernon , comtesse de vendome et de castres '' , before 1336 -- 30 may 1376 -rrb- was a french noblewoman , the youngest daughter of jean ii de ponthieu , count of aumale .she was the wife of jean vi de vendome , count of vendome and of castres .she acted as regent for her infant granddaughter jeanne , '' suo jure '' countess of vendome from 1371 until the child 's premature death in 1372 .