who plays jimmy's mother in boardwalk empire
Gretchen Mol Gretchen Mol (born November 8, 1972) is an American actress and former model. She is known for her roles in the films Rounders, Celebrity, 3:10 to Yuma, The Thirteenth Floor, and The Notorious Bettie Page, in which she played the title character. She also appeared as Gillian Darmody in HBO's Boardwalk Empire.