Chesterton & Francis

As I was researching the Net to find out definitively whether or not G.K. Chesterton was a Secular Franciscan, I came across wonderful quote the author wrote about St. Francis;

"St. Francis walked through the world like the pardon of God."

If anyone knows whether or not Chesterton was, in fact, a Secular Franciscan, please contact me and I'll post the information,