Onesimo was a
Zimbabwean by birth from
Malawian parents. He spent all of his childhood in Zimbabwe, where he also enrolled to become a Catholic priest, a profession he left before qualifying and worked as a writer for
Moto magazine. He later went to live in
Malawi, the country of his fore-fathers. He married a Malawian wife, Agnes Matope, in 1977 and had four children with her. Being a writer, he was very vocal against the
Banda government in Malawi. In 1987 he moved back to Zimbabwe with his family and worked for Mambo Press as the Editor for
Moto magazine. ==Career==