Bill,
I always thought Fort Stewart, GA was named after A.P. Stewart, but here's what I found:
The effort to locate the antiaircraft training facility to the Savannah area was led by U.S. congressman Hugh Peterson of Ailey. In the spring of 1940 he introduced a bill that led to the creation of the facility. The new installation was named Camp Stewart, after General Daniel Stewart, a Revolutionary war hero from Liberty County.
Jim Martin