Bluetooth is named after a medieval king who may have had a blue tooth
Bluetooth was never supposed to be called Bluetooth. Back in 1996, a consortium of companies—Intel, Ericsson, Nokia, and later IBM—decided to create a single wireless standard. Each company had been developing their own short-range radio technologies, but all the names they came up with sucked...
gizmodo.com
Other historical anecdotes say his teeth were blue due to fondness of blueberries.
