Since this thread is just on the Epitaph might as well re-link these, as to solve the riddle, it's very likely that you need to analyze the names to some extent. The information is purposely overkill info as I was trying to provide as much info as possible as to what was asked. It may or may not have any relevance to the mystery.
These were posted in the EP03 game thread and contains some spoilers, so read at your own risk.
The family (japanese kanji analysis)
http://forums.animesuki.com/showpost...&postcount=642
The other characters (japanese kanji analysis)
http://forums.animesuki.com/showpost...&postcount=663
The romanized name analysis
http://forums.animesuki.com/showpost...&postcount=650