 Nyora kupfuurira kweiyi ndima - Dodwell akaberekerwa muDublin muna 1641. Baba vake, William Dodwell, avo vakarasikirwa nepfuma yavo muConnacht munguva yokupandukira kweIrish, akaroorwa naElizabeth Slingsby, mwanasikana waSir Francis Slingsby uye akagara muYork muna 1648. Henry akagamuchira dzidzo yake yokutanga paSt Peters School, York. 