 Complete the following phrase:  He was a Yoruba man, originally from Lagos in what is now Nigeria. He initially became a school teacher. He was educated at the Church Missionary Society Grammar School, and later in the Training Institute for Teachers, at the end of which he graduated as a teacher. For a few years, he taught at a Lagos Primary School. However, in 1884, he entered the colonial service of the Congo Free State as a clerk, rising to the rank of district sub-commissioner and a French-English translator in the office of the governor-general in Boma. Establishing himself at Boma, then the capital, he opened a general store and photographic studio. In 1894, he traveled to Antwerp to attend the 