The Outlander universe has officially expanded, with the debut of Starz‘s new prequel series, Outlander: Blood of My Blood. The enchanting new Outlander show takes us back to 1714 Scotland to show us just how Jamie’s (Sam Heughan) parents, Brian Fraser (Jamie Roy) and Ellen MacKenzie (Harriet Slater), fell in love despite the odds.

Besides revealing just why Ellen’s brothers hated Jamie’s dad or what went down between Brian and his best friend (and fellow Ellen fan) Murtagh (Rory Alexander), Outlander: Blood of My Blood also reveals that Claire’s (Caitriona Balfe) parents were a part of the story. Yes, Claire’s mom and dad — Julia Moriston (Hermione Corfield) and Henry Beauchamp (Jeremy Irvine) — also traveled through the stones back to 18th century Scotland!

Outlander: Blood of My Blood introduces Outlander fans to characters we’ve never gotten to see on screen before, like Ellen, Julia, and Henry, as well as the younger versions of some of our favorite characters from earlier seasons of the hit Starz show. We get to see Colum (Séamus McLean Ross) and Dougal (Sam Retford) in their youth, Murtagh as a happy and hopeful young man, and even Mrs. Fitz (Sally Messham) as a gossiping friend.

With all these new faces, it might be confusing for even the biggest Outlander fan to keep all of the main characters straight. Who’s related to whom? Who have we seen on Outlander before? And where might you have seen the stars of Blood of My Blood before? Here’s your Outlander: Blood of My Blood cast guide…