In this Appendix we are concerned with two problems: the knowledge of Anfortas and the Grail-community in Book V that their guest is Parzival, and Trevrizent's initial ignorance in Book IX that his visitor is his nephew Parzival and also the knight who failed at Munsalvæsche. I return to these problems in an Appendix because they are peripheral ones by comparison with the more vital processes of recognition underlying these Books — in Book V Parzival's failure to recognise what is expected of him, in Book IX his ultimate recognition of his position within the Grail-kingdom. Just as the links between these two Books are close (for Trevrizent explains the mysterious events that took place at Munsalvæsche), so are the two problems dealt with in this Appendix interconnected. Trevrizent's knowledge about Parzival's visit to Munsalvæsche must derive ultimately, by an unspecified channel, from the Grail-community itself. If those at Munsalvæsche were aware of Parzival's named identity when he came there, why, it may be asked, is Trevrizent ignorant of this vital detail? Or conversely: if Trevrizent does not know that his visitor is called Parzival, might this not suggest that the Grail-community were similarly ignorant?

The feasibility of connecting these two episodes suggests the possibility of equating the knowledge shown (or not shown) by Anfortas with that shown (or not shown) by Trevrizent.