Unfortunately our church history isn't quite as published as the Catholic church per se, so it's kinda hard to gather information about subjects like these.
I know that not all our patriarchs are considered saints but, were any of them 'evi' or 'corrupt?' The patriarchs in question, are the ones who were justly elected patriarchs, not the anti-popes who were imposed on us by various powers.
Comments
I hope this message finds you well in Christ. I'm not sure how much time you have to yourself, but you can read the history of all of the Coptic patriarchs:
http://www.tertullian.org/fathers/severus_hermopolis_hist_alex_patr_01_part1.htm
That is the first part of four parts. I trust that you'll find most the information that you need regarding your inquiry there.
In Christ,
Childoforthodoxy