 His father worked as a valuation surveyor while his mother ran a bookshop.When his mother's bookshop closed, the books were stocked at home, something that introduced Mulumba to reading early in his life and sparked a desire for storytelling.He studied at Bishop Ddungu Boarding Primary School, Blessed Sacrament Kimaanya Primary School, St. Henry's College Kitovu, and then Makerere University, where he obtained a Bachelor of Science degree in Land Economics.