Peter Marshall (1902-1949) was born in Scotland. He came to the United States in 1927 to study religion at Columbia Theological Seminary in Decatur, Georgia.
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.
John Knox (c. 1514-1572) was born in Haddington, Scotland and educated at the University of Glasgow. He was originally a Roman Catholic priest. In 1543 he converted to Protestantism due, primarily, to the preaching of the reformer George Wishart.