BTW, regarding Nixon, he was pretty typical of Midwestern Quakers. The Civil War broke the back of the old strucures built up by the Camisard and Quaker movements. It's hard to tell the difference between a modern Quaker church in Indiana and a Presbyterian or Methodist church. There are still some old meeting houses around ~ I know of one near Crawfordsville that's maintained out of charitable contributions. There are more of the old type in the Eastern states.
As far as Ronaldus Magnus going to church, he belonged to the Disciples of Christ, as I do, and I can't recall the rule about going to church ~ 'CAUSE THERE AIN'T ONE!
He did bring in preachers and such for services at the White House.
There are still some old meeting houses around ~ I know of one near Crawfordsville that's maintained out of charitable contributions. There are more of the old type in the Eastern states. There is one of the latter located just a mile from where I live:
The Friends I have met (three come to mind, one in high school, and two in adulthood) were/are of the "inner light"/not very Xian variety. Most who were in my area moved west after the Revolution (mostly to Indiana and Iowa, per a former neighbor of mine who is a Friend of the Societal variety). Despite their role in the founding of many towns in my area (and many more in PA across the river, William Penn being a Quaker for those folks reading this from Rio Linda), there are very few left, and they were a small minority even in the later Colonial period.