There were two Bishops named Sibour in Paris at nearly the same time:
Bishop Léon-François Sibour †, Auxiliary Bishop Emeritus of Paris, France
Archbishop Marie-Dominique-Auguste Sibour †, Archbishop of Paris, France
I guess I was reading about the wrong one. Thanks for the links. Interesting stuff but awfully depressing. More scars from the schism.
It is quite depressing, and important to note historically.
For years the two churches were separated by hateful rhetoric, and attacks.
Now it is really only extremely narrow definable issues standing between the two and ever improving dialog regarding them.
I think it would be more depressing if things had not changed since then.