Question: Name of autobiography written by advisor and confidant of Queen catalina of castile who  governed Castile as regent from 1406 until 1418 during the minority of her son.
Sentence (from "Catherine of Lancaster"): Catherine of Lancaster (Castilian: "Catalina"; 31 March 1373 – 2 June 1418) was Queen of Castile by marriage to King Henry III of Castile.
Relevant evidence: No