The movie takes some liberties with historical accuracy — Mary andQueen ElizabethI (Margot Robbie) never met as their faceoff scene suggests — but historian John Guy, whose bookQueen of Scots: The True Story of Mary Stuartserves as the historical basis for the film, assures the Henry (Jack Lowden) and Rizzio (Ismal Cruz Cordova) connection isn’t one of them.
“Darnley and Rizzio having a sexual relationship is definitely true to history,” Guy tells PEOPLE in this week’s issue.
Hulton Archive/Getty

In the historical drama, Mary, who hoped to take the English throne and bring both countries under one rule again, wasn’t concerned with her husband’s relationships with men because he helped her produce a male heir, their son James.
Ronan as Mary inMary Queen of Scots.Liam Daniel/Focus Features

Ronan, 24, echoes that Mary knew what she was doing when she got pregnant — but probably would’ve also liked to be in a fulfilling marriage.
“She was painted as this silly little girl and she really wasn’t,” the Irish actress says. “She led with her heart and she just wanted to be in love.”
When Henry assisted Mary’s council in killing Rizzio, one of Mary’s close friends, as part of a larger plan to take her crown, Mary grasped that she must protect herself and her son.
A portrait of Rizzio and Mary, circa 1565.Hulton Archive/Getty

“Their relationship is completely fractured,” Rouke says. “Mary realized because of all the betrayals that she’s suffered, she has to look forward and rely on her own power and her own strength, rather than outwards to the man she’s married.”
Henry didn’t ultimately go through with any of the schemes to steal power from his wife, and because of his unwillingness to comply, Mary’s advisors banished him and eventually had Henry murdered in 1567.
Ronan and Lowden (to her left) inMary Queen of Scots.Liam Daniel / Focus Features

“As soon as he gets married to her, he started to try to undermine her,” Rourke says. “He wanted to be named king alongside her and take her power. Really that was his father who was behind that. The issue was that Darnley was too weak to be able to make and carry off the ambitious move. So he had the appetite but not the stomach for it.”
Mary Queen of Scotshits theaters on Friday.
source: people.com