Talk:John Doukas Komnenos

Rüdt-Collenberg reference and Maria Taronitissa parentage
In References, source 9 is not even listed. There is only an author and no title with a page and footnote. I question if this source even exists, and there is also no certain mention of the parentage of Maria Taronitissa, only theories, and the material is unsourced after her name anyways.