https://www.hollywoodreporter.com/tv/tv-news/cw-supernatural-prequel-lead-roles-1235115792/

The Winchesters will follow the epic, untold love story of how Sam and Dead's dad John met their mom Mary and how they put it all on the line to not only save their love, but the entire world. Rodger will play John and Donnelly will take on the role of Mary.