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];