I have no idea if this is what is referred to, but it is what came up! Was Ambrose Catholic? I used to teach in a very divided area as far as Christianity was concerned, and I knew 2 St Ambrose schools - both were Roman Catholic. Gallard also is French. http://en.wikipedia.org/wiki/Four_Marks_of_the_Church http://www.catholic-pages.com/church/marks.asp http://en.wikipedia.org/wiki/Ambrose Good luck in your further research. Jean