Jenny Agutter was 10 in East of Sudan when she played the character 'Asua'.
That was over 60 years ago in 1964.
This was her first recorded movie acting credit (although may not technically be her first actual acting role).
Today she is 71, and has starred in 65 movies in total, 64 of those since East of Sudan was released.
In East of Sudan, I think Jenny Agutter looks: