wˈɪljəm, pɹˈɑːbəbli ðɪ ˈɛldɪst, hˌuː ɪnhˈɛɹɪɾᵻd ðɪ ᵻstˈeɪts ɪn nˈoːɹməndi ænd wʌzɐ səpˈoːɹɾɚɹ ʌv dˈuːk ɹˈɑːbɚt kˈɜːθoʊz.
William, probably the eldest, who inherited the estates in Normandy and was a supporter of Duke Robert Curthose.