[2][3] Mumba grew up with his parents and 11 brothers and sisters in Chinsali, in a religious home.

His father Sunday Mumba was a teacher and pastor at the United Church of Zambia.

Whilst there, he joined the Zambia Combined Cadet Force (ZCCF) and rose to the rank of Provincial Commandant for Southern Province.

Here he had hoped to become a full military man, but he changed his mind, left, and went to work in the mines on the Copperbelt province.

It participated in the 2001 Zambia general election, where Mumba emerged as 5th out of over 11 candidates.