Lily James, the actress portraying Lady Rose
Lady Rose is the niece of Robert Crawley, Lord Grantham. How she is related to him is currently unknown, but as Rosamund and Marmaduke had no children[1] it is most likely through Cora. She will be portrayed by Lily James.
References
- ↑ When Sybil states that she feels sorry for her aunt, Mary states that she doesn't and says that she'd love to "be alone in a big house in Eaton Squarw with all that money"'; this means that Rosamund is alone after being widowed and has no children, so Rose CANNOT be Rosamund's daughter otherwise Rosamund would NOT be alone, and thus, must be a niece of Cora and Robert would be her uncle by marriage