This is a bit of a ditty written specially for my big sister Mary, based on events in the novel These Old Shades by Georgette Heyer, which you should read if you haven't already, and if you've read it already, you should read it again.
Mr. Manvers lost his horse
now he's very sad, of course
summon Poirot, summon Morse,
poor Mr. Manvers
Mr. Manvers lost his roan
now he's very much alone
see him crying, hear him groan,
poor Mr. Manvers
Mr. Manvers lost his mare
to Lord Rupert Alistair
monstrous world, oh, despair,
poor Mr. Manvers