Masarautar Nnewi, kamar masarautar Birtaniyya, ita ce gadon gargajiyar gargajiya wanda ya danganci fifikon mutum da kuma gadon ɗansa. A Nnewi ana kiran masarautar gargajiya da Igwe. An haifi Igwe kuma ba ayi shi ba ko zaɓaɓɓe, kuma tsarin rabon gado shine haƙƙin gargajiya da kuma privilegeancin fifiko. Matsayin ba abu ne mai sauyawa ba ko sasantawa. An yi sarakuna 20 na Masarautar Nnewi (duba Lissafin Masarautu na Nnewi ). An kafa Masarautar Nnewi ne a wajajen 1498  tare da asalin garin Mmaku, kakan Nnewi. Sarki mai ci yanzu shine Igwe Orizu III shine sarki na 20 a cikin zuriyar Nnofo Royal. Igwe" sarki ne, asali, kuma wannan lakabi ne wanda ake amfani dashi koyaushe a duk yankunan arewacin masu jin Igbo .  Kalmar tana da alaƙa da allahntakar sama, yana mai nuna matsayin sarki mai ɗaukaka - har ma da keɓe shi / girka shi kamar wani abu kamar allahntaka a duniya.  Igwe na Nnewi zai zama sarkin ruhun Nnewi ; chi ma'ana ruhu ko ƙarfin rai. Babban al'adun gargajiya na galibin garuruwan Ibo na arewa shine na Ana / Ani (allahiyar ƙasa), kuma yawanci ana ɗaukarta a matsayin ruhu mai ƙara girman mutum.