Note: Do not rely on this information. It is very old.
Frumentius
Frumentius, the founder of the Christian Church of Abyssinia, and known to his followers in that country as Abba Salama, "Father of Salvation," is a personage of whom little is known. According to tradition, he went out to India with two other missionaries about the middle of the 4th century, and obtained the favour of the king of that uncertain region. Returning to Alexandria, he was consecrated Bishop of Axum in Abyssinia by Athanasius, who mentions this fact in his letters. Some have thought that South Africa was the field of his labours, but there is little evidence to controvert the direct statement of Athanasius himself.