Name the monarch for 13 october 1131
CREATE TABLE "capetian_associate_kings" (
  "co_king" text,
  "relationship_to_monarch" text,
  "crowned" text,
  "co_kingship_ceased" text,
  "reason" text,
  "monarch" text
);
SELECT "monarch" FROM "capetian_associate_kings" WHERE "co_kingship_ceased"='13 October 1131';