Mirza Nasir ud-din Baig Muhammad Khan Humayun (Humayun, for short) was the second Mughal Emperor who ruled Northern India in the early part of the 16th century. He so trusted his barber that, when he died, a mausoleum was built for him in Dinpanah (“Refuge of the Faithful”), now called Delhi. The layers of marble and stone continue beneath the slab which bears the inscription.
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Thank you, Ian for the nice post. I like the header too.