Bluetooth is, not a joke, named after King Harald Bluetooth. He was a viking, who united many Norse tribes, you know with all the pillaging they are known for.
Oh wow you’re serious
The name “Bluetooth” was proposed in 1997 by Jim Kardach of Intel, one of the founders of the Bluetooth SIG. The name was inspired by a conversation with Sven Mattisson who related Scandinavian history through tales from Frans G. Bengtsson’s The Long Ships, a historical novel about Vikings and the 10th-century Danish king Harald Bluetooth. Upon discovering a picture of the runestone of Harald Bluetooth in the book A History of the Vikings by Gwyn Jones, Kardach proposed Bluetooth as the codename for the short-range wireless program which is now called Bluetooth.
If something is invented as a direct replacement it should be known as Forkbeard for Harald’s son, Sweyn Forkbeard