Who Was Mary Slessor? There is something about Mary Slessor that has turned her into a legend. By the time she died, she was as well-known as one of her role models, David Livingstone. Today, her name is still highly regarded both in her native Scotland (her image appeared on a 1997 Clydesdale Bank £10 note) and on her mission field of Nigeria, where she is often remembered as Obongawan Okoyong (Q...