He was educated at Laerskool Zeerust, Transvaal and at Christian Brothers College in Kimberley.
After working for a year in Zambia he entered St John Vianney Seminary, Pretoria as a student for the Diocese of Port Elizabeth at the invitation of Bishop Ernest Green.
As well as his clerical training in the seminary, he also obtained a BA in Philosophy degree through the University of South Africa.
Coleman was named bishop of the Port Elizabeth diocese in 1986 resigning on 20 August 2011.
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