Mar Abba I
... that Mar Abba I, the Nestorian Catholicos of Seleucia-Ctesiphon from 540 to 552, was a convert from Zoroastrianism?
... that <b id="mwFc0"><a class="mw-redirect" href="./Mar_Abba_I" id="mwFc4" rel="mw:WikiLink" title="Mar Abba I">Mar Abba I</a></b>, the <a href="./Catholicos#Autocephalous_Churches_of_East_Syrian_Rite" id="mwFc8" rel="mw:WikiLink" title="Catholicos">Nestorian Catholicos</a> of <a class="mw-redirect" href="./Seleucia-Ctesiphon" id="mwFdA" rel="mw:WikiLink" title="Seleucia-Ctesiphon">Seleucia-Ctesiphon</a> from 540 to 552, was a convert from <a href="./Zoroastrianism" id="mwFdE" rel="mw:WikiLink" title="Zoroastrianism">Zoroastrianism</a>?