Black Mountains. A mountain chain in Brittany, [196]

Blanche of Castile. Mother of Louis IX, [208]

Blancheflour. Princess, sister of King Mark, mother of Tristrem;

in the story of Tristrem and Ysonde, [258-259], [261]

Blois. A famous French château;

mentioned, [206]

Blois, Charles of. Duke of Brittany;

contests the succession to the duchy, [30-32];

taken prisoner by Joan of Flanders, [31];

the marriage of, with Joan of Penthièvre, [32];