Until today I had never heard of John Bekkos, but I already like what I know about him. I learned what little I do know from Peter Gilbert, who has a blog that appears to have John Bekkos as a central point of discussion. The blog is called De unione ecclesiarum, and you may find a short summary of some of Bekkos's views here.
Bekkos was the Patriarch of Constantinople during the so-called Union of Lyons (1275-1282), and many of the opinions that Gilbert has collected strike me as quite congenial to my own views. I look forward to learning much more about him, and exploring our common heritage.