Key aspects of Benson Wanjau's life include:
- He was born in 1937 in what was then Nyeri district.
- As a pupil at CMS primary in Pumwani, Nairobi, his favourite subject was mathematics.
- Financial constraints led him to drop out of school in Form Two.
- He is married to Augusta Wanjiru, and they have two children, Patricia Njeri and Michael Karira.
