...most of the Founders were Deists and Unitarians who rejected doctrines like the Incarnation. Thomas Jefferson dismissed the Trinity as "incomprehensible jargon." He and other Founders made no mention of God in the Constitution, and took pains not to establish an official church on US soil. And yet, as various scholars have noted, disestablishment grew out of respect, not disdain, for religion, which, James Madison observed, "flourishes in greater purity without [rather] than with the aid of government."
http://www.sullivan-county.com/news/ffnc/
Just the first one on my search....
Hmm Thomas jefferson....