That is a Kabrinskian title, not an SA title. So yes, I can say that the word Prince is never used in SA rank titles. It is a *very* important distinction.
That is quite true but the religious title that is wanted is something different for priests who are lords, no one is saying they need to change their religion rank names but people are saying it feels weird calling a priest a baron, count, etc and thus want to come up with a new title for them. It feels weird to call priest/heros, heros and so the religious title of Martyr is used. Within a religion a priest/hero can have whatever title they desire but priest/heros are called martyr outside of it which is similar to what is wanted but with the lord/baron/count/etc titles.