Paul Halmos's mother died when Paul was six months old. Paul's father was a successful physician in Budapest who had the rather remarkable foresight to realise the problems that were going to befall Europe.
Paul Halmos' s ina kapag namatay Paul ay anim na buwang gulang. Paul's ama ay isang matagumpay na manggagamot sa Budapest na nagkaroon ng pansin sa halip na realise-iintindi sa hinaharap ang mga problema na na-pagpunta sa befall Europa.