Florence Marne is the mother of Wentworth governor Erica Davidson. Marne appears for the first time in episode 208 when Erica travels to meet her mother as she is ill. The two has an evident strained relationship and Florence has always been cold towards her and her brother James. At the end of episode 208 Florence Marne collapses as she is about to answer the phone after Erica decides to call her to reconcile. Florence dies in episode 209 during an operation after suffering a cerebral thrombosis. The doctor at the hospital tells Erica that her mother's apparent coldness towards her children was due to her feelings of guilt after her first child died in an accidental fall. A fact that Erica up to that point had been unaware of.
The role of Florence Marne was played by actress Aileen Britton.