Mary had a baby, Yes, Lord; Mary had a baby, Yes, my Lord; Mary had a baby, Yes, Lord; The people came to worship him in Bethlehem. Mary had a baby, Yes, Lord; Mary had a baby, Yes, my Lord ...

Lady Okereke was a twin, and not just a twin, she belonged to the first generation of twins – or ejima – saved after the scourge of twins that Mary Slessor defined her life by stopping.