Mary Ukaego Nzenwa was born on 12 May 1952 in Amudi Obizi,
Ezinihitte Mbaise Local Government Area of
Imo State in southeast Nigeria. She is the second daughter of Eze Bernard Nzenwa and Ugoeze Benadette Nzenwa. Her father worked as a lawyer in the United Kingdom during 1959 before he was made Secretary of the
Nigeria Airways. Ukaego attended a number of primary schools as a child including St Benedict's Primary School, Obizi Ezinitte, St Michael's Primary School,
Umuahia, St Agnes Primary School, Maryland, and Our Lady of Apostles Primary School, Yaba. She briefly attended Our Lady of Apostles Secondary School, also in Yaba, Lagos. Following the outbreak of the
civil war in 1967, Ukaego and her parents relocated to the
southeast of the country. There, she continued her education at Owerri Girls High School until her family moved back to
Mbaise. She then attended Mbaise Girls Secondary School and later enrolled at the Queen of the Rosary College in
Onitsha. In 1972, she passed with Grade I (aggregate 6) in the West African School Certificate Examination. The same year, Ukaego gained admission into the
University of Nigeria, Enugu campus where she read law. In her second year at the university, she earned a scholarship for maintaining the second class upper division league with higher scores. She met
Peter Odili, a medical doctor, at a campus party and the two began a romantic relationship. In 1976, she graduated with an LLB (Hons) and was rated the best student of the department of commercial and property law. Shortly after, she attended the
Nigerian Law School and received her B.L. certificate in 1977, before embarking on her youth service in
Benin City and Abeokuta. Odili was serving as a house officer in Benin City at the time. ==Legal career and First Lady of Rivers State==