The Episcopal Church has been alive and well in America for only slightly longer than St John's!
Begun in 1789, The Episcopal Church had a number of revolutionary features--the inclusion of lay people in church governance, the election of bishops by vote of lay people and clergy, and a theology that included Protestant as well as Catholic essentials. The best simple statement of The Episcopal Church theology is still the Chicago-Lambeth Quadrilateral (developed in 1899), which stated that we believe the following four points. These points make it possible for us to find common ground with both the Roman Catholic and the Reformed traditions.
To learn about the Episcopal Church today, visit: www.episcopalchurch.org