History Mystery - Deeper Dive into Separation of State and Church

Thomas Jefferson coined the phrase "wall of separation between church and state". However, he was not alone in creating the First Amendment's Establishment and Free Exercise Clauses. Who were other contributors to this groundbreaking notion? Who stood up not just in Revolutionary times, but throughout our country's history to defend and protect religious liberty? Let's do some research on an individual basis to discover more names and bios of those whose work vigorously defended this right which is of paramount importance to US. Find a name, famous or obscure, and tell us in 5 - 15 minutes about them. When you make your choice, please post on this site in the comment section so we avoid duplicates.