Ƙirƙirar wani nau'i mai mahimmanci na wannan jumla William Rathbone IV (10 Yuni 1757 - 11 Fabrairu 1809) ya kasance memba na iyalin Rathbone na Liverpool.
Tabbas, mafi mahimmancin jumlar ita ce "William Rathbone IV (10 Yuni 1757 - 11 Fabrairu 1809), ɗan William Rathbone III da Rachel Rutter sun kasance masu mallakar jirgin ruwa na Liverpool da 'yan kasuwa, waɗanda ke cikin ƙungiyar kasuwancin Amurka tare da Liverpool. "