I ran across this page a while back and found it interesting :
http://www.nikhef.nl/~tonvr/keris/keris2/keris01.html
The author states :
" Not only do wayang characters have special Kerises, but Dapur Keris are also named after wayang characters: e.g. Dapur Karna Tinanding, Semar Tinandhu and so on. "
I'd love to see some examples of these Wayang Kerisses ; who's got one and can you explain the connection and the features that determine it ?