Saints with questions about the Mother of God?

[Olympiada]

Hello all,

Are there any saints who expressed concerns over the teachings of the Church about the Mother of God? or sects, or heresies?

Thanks
Olympiada

[Kusanagi]

St Cyril of Alexandria did against Nestorian.
St Mark of Ephesus against the Catholics
St John Maximovitch against Sergius Bulgakov.