Kammala jumla mai zuwa: An haifi Hoare a ranar Saint Patrick a Calcutta ga iyayen Irish. Mahaifinsa matukin jirgin ruwa ne. A lokacin da yake dan shekara takwas an tura shi zuwa makaranta a Ingila zuwa Kwalejin Margate sannan ya fara horo a fannin lissafi kuma, kamar yadda bai iya zuwa Sandhurst ba, ya shiga rundunar sojojin. Jarumin yara na Hoare shi ne Sir Francis Drake. Yana da shekaru 20 ya shiga London Irish Rifles a farkon yakin duniya na biyu, daga bisani sai ya shiga Rundunar Reconnaissance na 2 na Royal Armored Corps a matsayin mai mulki na biyu kuma ya yi yaƙi a yakin Arakan a Burma da kuma a
Yaƙin Kohima a Indiya. An daukaka shi zuwa mukamin Manjo. A shekara ta 1945, ya auri Elizabeth Stott a New Delhi, wanda ya haifi 'ya'ya uku. Wani ɗan gajeren mutum, Hoare an bayyana shi da waɗanda suka san shi a matsayin "dapper" da "mai ban sha'awa".