sutta reference: forbidding to call the Buddha by name I've heard that there are suttas where the Buddha forbade people to call him by his given name. Which suttas are these?
This first occurred when he met the five ascetics after the enlightenment when they started calling him by his name Gotama before teaching his earliest discourse, Dhammacakkapavattana sutta.


  Bhikkus, do not address me by the name Gotama nor as a friend. I have
  become a Perfect One, worthy of the great reverence.


Source: http://www.buddhanet.net/pdf_file/damachak.pdf page 56