Cardinal from Ghana is an early favourite:

Cardinal Peter Turkson, a Ghanaian, is president of the Pontifical Council for Justice and Peace. He has been considered 'papabile' since he was appointed to this post by Benedict XVI in 2009 amid speculation that the next pope would probably be from Africa as part of the Catholic church's attempts to modernise and reach out to a huge Catholic congregation from the Sahel southwards.

Peter Turkson was born in western Ghana to a Methodist mother and Catholic father. As a boy in the seminary he was considered far too boisterous to be content in a contemplative, solemn career in the church.

But he was reportedly begged by his mother to knuckle down and study hard to become a priest, and he did so well he was chosen to move to the US to study at St Anthony-on-Hudson Seminary in Rensselaer, New York, and he was ordained as a priest in 1975.

Returning to Ghana, he became a professor at St Teresa's Seminary, near where he grew up, and dedicated himself to academia as well as performing pastoral work in the local area.

In 1992 he was appointed Archbishop of Cape Coast by Pope John Paul II and served as president of the Ghana Catholic Bishops' Conference from 1997 to 2005.

It was during this time, in 2003, when Pope John Paul made him the first ever Ghanaian cardinal and his influence was extended by Pope Benedict XVI, who appointed him president of the Ponitifical Council for Justice and Peace, a role which sent him around the world mediating in countries such as the Ivory Coast in 2011.

In October of that year he called for the establishment of a 'global public authority' and a 'central world bank' and has come out in favour of a Robin Hood-style tax on large financial transactions. When he visited Britain with Pope Benedict in 2010 he was singled out as a possible successor.

Guardian