Great Master Lawrence:
I guess you didn't understand my meaning. Didn't I say the most obvious things are the most difficult to notice?
Think about the word "records" in the prayer... Where are records kept?
Right! A library! As far as I can tell, this is probably referencing the Library of Saints in Rune -- they have the oldest records collection in the kingdom.
Take the number I told you, go to the Library of Saints in Rune and there ask the library director.
If I remember correctly, the current director is Sofia. She is very bright. If you mention my name, I'm sure she'll give you the records without any fuss. But hurry! We don't want any more strange monsters wandering in. Oh, and don't forget to take the strange object the monster left behind when it died.