Possible Clues:

• One hears tale by Harrow's third or fourth former
• Prior could be seen as more than a lord, perhaps
• Noble monarch embracing one on a previous occasion
• Previous invention featured in rare broadcast
• Rare lie (anag)
• Sooner in time
• Before the nobleman – that is right
• Older person like Lord Emsworth preceding current Queen?
• Some wheat added to pork pie recipe in the past
• Before hearing story, tip for narrator