The affected nerve in piriformis syndrome is the sciatic nerve. Collectively the tibial and common fibular nerve makes up the general term sciatic nerve. Since the sciatic nerve is so close to the piriformis it is acknowledged that the muscle plays a role in irritating the nerve.
They named the band Lynard Skynyrd after. Leonard Skinner, a disliked gym teacher / coach some of the members had in high school. Skinner later moved on to selling Real Estate in Jacksonville Florida.
Cersei is most likely named after the nymph Circe in Greek mythology. Her name has very interesting references to the mythology, as you'll see: Circe (pronounced just the way Cersei is) was an enchantress who murdered her husband and is therefore exiled to live on a lonely island. Yeah.