When you click on a gravestone, it displays the name of the fallen PC. I have seen a wide range of use of this information from completely ignoring it, to RPing a sense of knowing the person it belongs to, to the extreme of providing the name whether you knew the soul or not.
My question is what is the official stance? If a thief jumps you in the woods and gets killed in the process, do you know the thief's name now from his gravestone?