Onuora Nzekwu received the Rockefeller Foundation Fellowship in 1961, which enabled him to study American Methods of Magazine Production with Crafts Horizons in New York.
In 1964, he was awarded a UNESCO Fellowship, which allowed him to study copyright administration for three months in Geneva, Prague, Paris, London, New York and Washington.
In December 2008, Nzekwu was conferred with the Nigerian national honour of Officer of the Order of the Niger (OON).
Nzekwu's novel, Faith of Our Fathers, a compendium of the arts, beliefs, social institutions and code of values that characterize the Onitsha traditional community, was published in 2003.
Nzekwu married Onoenyi Justina Ogbenyeanu, daughter of Chief Isaac Aniegboka Mbanefo, Odu II of Onitsha, in June 1960 and was inducted into the ancient and prestigious Agbalanze Society of Onitsha in May 1991.