Hi, Raffi and all,
It does seem likely that Dera Sor is probably Yeghrdut, although any possible way this can be verified would be appreciated, i.e. a match of the existing ruins/foundations against plans/pictures of Yeghrdut, if indeed they exist today.
Another question: I understand that books from Yeghrdut monastery are today housed in the Institute of Ancient Armenian Manuscripts http://www.matenadaran.am/v2_2/
I have tried searching the site for any reference to the library, in the hope of identifying the manuscripts in question, but have so far failed.
Has anyone any way of checking Matenadaran to find out what texts they do hold from Yeghrdut.
Again, appreciate all help in this respect.