Complex sentence: The diamond was then put up for sale in 1891 by Alexander Malcon Jacob, hence the name, where it was offered to Mahbub Ali Khan, the Nizam of Hyderabad.
Split into simpler sentences: The diamond was put up for sale in 1891 by Alexander Malcon Jacob, whence the name. It was offered to Mahbub Ali Khan, the Nizam of Hyderabad.