On his succession to the earldom of Seafield, he assumed the additional surname of Ogilvy, styling himself Grant-Ogilvy.
ˌɔn hɪz səksˈɛʃən tə ðɪ ˈɜːldəm ʌv sˈiːfiːld, hiː ɐsˈuːmd ðɪ ɐdˈɪʃənəl sˈɜːneɪm ʌv ˈɑːɡɪlvi, stˈaɪlɪŋ hɪmsˈɛlf ɡɹˈæntˈɑːɡɪlvi.