Context:

Referenced as 'Eric Ives in his book' when discussing the key factor of the Privy Council deciding whether to raise troops to help Northumberland. Eric Ives was a Tudor historian who wrote about Lady Jane Grey and Anne Boleyn.

Context:

Referenced as 'Lady Bird, kings and queens of England' in the context of discussing whether Lady Jane Grey should be considered a queen - the speaker notes that if you don't have an entry in this Ladybird book series, you're not considered a legitimate monarch.