Jerzy Neyman's parents were Czeslaw Neyman, who was a lawyer, and Kazimiera Lutoslawska. Kazimiera came from Kiev and, in fact, Czeslaw and Kazimiera met when he was studying law at Kiev and rented a room in a house run by Kazimiera's mother. Jerzy was the youngest of his parents four children but, since the oldest child Karol was sixteen when Jerzy was born and two girls had by this time died, he was essentially brought up as an only child.
ATTENTION - Automatic na salin mula sa Tagalog na bersyon Jerzy Neyman 's mga magulang ay Czeslaw Neyman, na noon ay isang abogado, at Kazimiera Lutoslawska. Kazimiera nagmula sa Kiev, at sa katunayan, Czeslaw at Kazimiera matugunan kapag siya ay pag-aaral ng batas sa Kiev at bahay ng isang kuwarto sa isang bahay tumakbo sa pamamagitan ng Kazimiera ng ina. Jerzy ay ang bunso ng kanyang mga magulang ng apat na mga bata ngunit, dahil sa ang pinakalumang anak Karol ay labing-anim kapag Jerzy ay ipinanganak at dalawang batang babae na nagkaroon ng mga oras na ito namatay, siya ay mahalagang nagdala up bilang isang anak lamang.