A reader plumbs the weirdness:

"Willow" was Buffy the Vampire Slayer's best friend and "Piper" was the eldest sister on the series Charmed played by Shannen Doherty.  The governor obviously has a penchant for television shows of paranormal female empowerment.  (I know, it's too gay that I know this).  "Trig?" Don't have clue.

Bristol! A town in near Wales! And another correction:

Piper was the second sister, she was played by Holly Marie Combs. Shannon Doherty played Prue (Prudence) Halliwell. Willow and Piper are both witches. Good witches.