Agnes Moorehead was 39 in Citizen Kane when she played the character 'Mary Kane'.
That was over 82 years ago in 1941.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
In 1974 she died aged 73, starring in 76 films in her career, 75 of those after Citizen Kane was first released.
In Citizen Kane, I think Agnes Moorehead looks: