IanC! Thanks for the link! Ain't mudcat great, folks! I first heard of Lurting in a Quaker childrens story, where the king laughs rather than smiles, and in the account linked by IanC he refers to an eariler and longer version, so poetic licence, I hope in the earlier memory, he recalled the king laughing. I had to do a huge edit of the story, as it is a real ripping yarn.
Cheers
Larry