William E. Barton was an American author, historian, and minister, known for his extensive writings on American history and religion. He was born on March 28, 1861, and became a prominent figure in the early 20th century, contributing to various publications and books that explored the intersection of faith and national identity. Barton is perhaps best known for his work on Abraham Lincoln, where he examined the former president's religious beliefs and their influence on his leadership. His scholarship has been influential in shaping the understanding of Lincoln's legacy and the role of religion in American history.