Henry Cavendish akaberekwa musi wa10 Gumiguru 1731 muNice, uko mhuri yake yaigara panguva iyoyo. Amai vake vaive Lady Anne de Grey, mwanasikana wechina waHenry Grey, 1st Duke weKent, uye baba vake vaive Ishe Charles Cavendish, mwanakomana wechitatu waWilliam Cavendish, 2nd Duke weDevonshire. Mhuri yakateedzera dzinza rayo kuburikidza nemazana masere emakore kuNorman nguva, uye yaive yakabatana zvakanyanya nemhuri zhinji dzevakuru veGreat Britain. Amai vaHenry vakafa muna 1733, mwedzi mitatu mushure mekuzvarwa kwemwanakomana wavo wechipiri, Frederick, uye nguva pfupi isati yasvika zuva rekuzvarwa kwaHenry wechipiri, vachisiya Ishe Charles Cavendish kuti varere vanakomana vake vaviri. Cavendish ainzi "The Honourable Henry Cavendish".Kubva pazera remakore gumi nerimwe akapinda muNew Henry's School, chikoro chakazvimiririra padyo neLondon. Pazera remakore gumi nemasere (musi waNovember 24, 1748) aigara muCambridge.
Makore 1748