martyrology
noun
mar·tyr·ol·o·gy ˌmär-tə-ˈrä-lə-jē 
1
: a catalog of Roman Catholic martyrs and saints arranged by the dates of their feasts
2
: ecclesiastical history treating the lives and sufferings of martyrs
Example Sentences
Recent Examples on the Web The fate of this 19th century Romantic poet himself has become an exercise in Ukrainian martyrology. 
Sasha Dovzhyk, CNN, 11 May 2022 If anything, this martyrology feels more Christian than Jewish, which might explain why the Books of the Maccabees are canonical in the Catholic faith but not the Jewish one (though there are many theories on this question). David Harsanyi, National Review, 9 Dec. 2020
Sasha Dovzhyk, CNN, 11 May 2022 If anything, this martyrology feels more Christian than Jewish, which might explain why the Books of the Maccabees are canonical in the Catholic faith but not the Jewish one (though there are many theories on this question). David Harsanyi, National Review, 9 Dec. 2020 Word History
First Known Use
1599, in the meaning defined at sense 1