ɪn wˈʌn θˈaʊzənd tˈuːhˈʌndɹɪd sˈɪks dˈæʃ zˈiəɹoʊ sˈɛvən ʃiː ænd kˈɑːnstəns wɜː kˈoʊˈɛɹz tə ðɛɹ nˈiːs, ˈɪzəbˌɛl də bˈoʊlbɛk, dˈɔːɾɚɹ ʌv ðɛɹ bɹˈʌðɚ, wˈɔltɚ, ænd wˈaɪf ʌv ˈɔːbɹi də vˈɪɹ, sˈɛkənd ˈɜːl ʌv ˈɑːksfɚd.
In 1206-07 she and Constance were co-heirs to their niece, Isabel de Bolebec, daughter of their brother, Walter, and wife of Aubrey de Vere, 2nd Earl of Oxford.