that they decided to include because it brought the town together:
The story goes that Zeke Calhoun who Camille (Amy Adams) refers to as our founding pedophile fought for the South in the Civil War while betrothed to Millie, a young girl from a Union family who Camille refers to as her great-great-great-grand victim. According to the tale, some Union soldiers traveled South to capture Calhoun dead or alive. But Millie, who at this point was pregnant, refused to give up her husband.
Camille says in the episode that its how Millie resists the soldiers that the townspeople love. The story ends with Millie refusing to reveal to the Union soldiers where Zeke is hiding, prompting them to tie her to a tree and do horrible things to her violations, as Camille says to the point of Millie losing her baby.
When Richard (Chris Messina) questions why this dark story merits a holiday, Camille counters, We dont have a lot of happy stories around here.
Maybe since the "heroine" was supposedly from a Union family, they gave her this nod?