14 Celebrities You Had No Idea Were Related

9. Stellan Skarsgard and Alexander, Gustaf and Bill Skarsgard.

Relation: Father and sons. Good Will Hunting actor, Stellan (right), has created three rising stars who are following in his footsteps, but lots of people don’t know they’re his sons! Alexander (left), known for True Blood and Big Little Lies.

Pictured above is Bill (right) with his dad, who recently rose to fame as the notorious clown in the remake of IT are both on their way to huge stardom.

Stellan’s eldest son, Gustaf, rose to fame after his casting as Floki in hit series Vikings. Most recently he stars in season two of HBO’s Westworld as Karl Strand.