New details have emerged regarding the passing of Ben and Casey Affleck's mother, Chris Anne Affleck, who died last month at the age of 83 following a battle with pancreatic cancer. The Daily Mail has reached out to reps for Ben Affleck and health officials in Los Angeles County for further comment on the story. New details have emerged regarding the passing of Ben and Casey Affleck's mother, Chris Anne Affleck, who died last month at 83 following a battle with pancreatic cancer. Chris Anne 'taught literacy classes in Mississippi during Freedom Summer, marched against the Vietnam War, and reveled in 1960s counterculture,' her obituary stated. Chris Anne was present for a Thanksgiving celebration last year at Garner's home in Los Angeles, Page Six reported.