Reason and Theology have an interesting interview with Sebastian Brock, an expert on Mary in the Syriac Tradition:
Dr. Sebastian Brock on Mary in the Syriac Tradition
It is a little bogged down by William Albrect et al trying to get Brock to support Rome's dogmatic teachings on Mary, especially the Immaculate Conception. Notwithstanding this (it is typical of Rome's apologists to do this, so par for the course), it is an informative discussion.
On the Immaculate Conception itself, see, for e.g.:
Answering Tim Staples on Patristic Mariology and the Immaculate Conception
Dr. Sebastian Brock on Mary in the Syriac Tradition
It is a little bogged down by William Albrect et al trying to get Brock to support Rome's dogmatic teachings on Mary, especially the Immaculate Conception. Notwithstanding this (it is typical of Rome's apologists to do this, so par for the course), it is an informative discussion.
On the Immaculate Conception itself, see, for e.g.:
Answering Tim Staples on Patristic Mariology and the Immaculate Conception