Tenney's Book 3 features illustration of both Tenney and her friend Logan. Which has me thinking about another country duo, Scarlett and Gunnar from the show Nashville.
Scarlett and Gunnar from Nashville
So while Swift might be the well known inspiration for Tenney, the sweet curly headed blonde country singer-songwriter ingenue is a real life and fictional trope that has been around longer than even Dolly Parton.
Scarlett from Nashville