With a bowstring, in the shrubbery?

I owe my readers an apology.  The Persian manservant was not strictly a manservant, and he was not strangled with piano wire before being buried in the garden at Buckingham Palace. The unfortunate murder victim was a 'favourite' of the Shah, who displeased him in some way while they were staying at Buckingham Palace in 1889 and was garrotted with a bowstring.  Of course!  What on earth would a Persian nobleman be doing with piano wire?

The footnote reads: 'His corpse is said to be still buried in the palace garden.  See Ralph Nevill, Unconventional Memoirs (London, 1923).