Robert Moffat (1795-1883) was a Scottish Congregationalist missionary to Africa. He was born to a poor family and spent his early years working as an estate gardener.
David Livingstone (1813-1873) was a renowned missionary and explorer. He grew up in Glasgow, Scotland in a poor family. He studied on his own and was able to enter the University of Glasgow in 1830 where he earned degrees in theology and medicine.