Towards the south-east corner, within the 'char bagh' garden, lies a tomb known as Nai-ka-Gumbad, or Barber's Tomb, belonging to royal barber, it is datable to 1590-91 CE, through an inscription found inside. Its proximity to the main tomb and the fact that it is the only other structure within the main tomb complex suggests its importance, however there are no inscriptions suggesting as to who is interred therein, the name Barbers tomb is the local name of the structure, hence still in use. (Wikipedia)
Source: British Library