Stalemate — 21.8

Solution

8TS♘EMECS
7EIAPTL♔K
6WLMSNPH♕
5♘HNERHAE
4O♗♘RISTE
3WPANZ♕OQ
2ERKTVMFO
1CD♖ILE♖D
abcdefgh

The various names in the story represent chess pieces:

NamePieceNamePiece
Neuschwanstein♖ RookJames Douglas♘ Knight
Henry VII♔ KingMaria Theresa♕ Queen
Cleopatra♕ QueenThomas Becket♗ Bishop
William Marshal♘ Knight

The story helps give the location to each piece, where possible locations are represented by a *. The letters in the spaces not attacked by any pieces, in reading order, spell the solution:

SEMAPHORE