The character Davina Porter is so named as an homage to the real-life Davina Porter, the prolific voice actor who narrated the Outlander book series for listening.
The actor playing Brian Fraser is named Jamie Roy. It also happens to be an alias that Brian's son Jamie uses in Outlander.
The boys who play Rupert and Angus are in real life the sons of the men who played them on Outlander.
Prequel to Outlander revolving around Jamie Frasier's parents.
The love story of Claire's parents is set during WWI. In real life actor Jeremy Irving who plays Claire's father Henry was in the movie War Horse in which his character becomes a soldier in WWI.