John's mother, the High Queen of Montival, knows that the age of myths has returned. A pivotal event is not documented as history but orally recounted as myth, immediately immortalized by tribal troubadours. Furthermore, the magic swords really do bestow paranormal powers while visions are encounters with real supernatural beings. In this context, maybe the Queen partially understands that her son is playing his part in a Story where independent adventures are the kinds of events that must happen to him at this early stage of his knightly career? All is not Chance because Powers are involved.
Six details discussed so far:
commentaries on war by Prince John - and by a Poul Anderson time criminal;
divine names in the Emberverse - and in the Time Patrol series;
alliteration in three fictional narratives;
motives for war in the Emberverse - and in the Technic History;
potlach tribes in the Emberverse - and in the Time Patrol universe;
a prayer in the Emberverse - and in Heinlein's Future History (see the "potlach" link).