I have collected together all the pieces of the Life of the 6th century patriarch of Persia, Mar Aba, and revised them slightly and uploaded them to the Additional Fathers collection, with an introduction. The translation is here.
I made the translation, not from the original Syriac, but from the BKV German translation. It’s probably a bit shaky at points; but, hey, it exists!
As ever, I place the material in the public domain. Do whatever you like with it, personal, educational or commercial.