Real age of Marlon Brando in Don Juan DeMarco
In the movie Don Juan DeMarco, Marlon Brando was:
69 years old
That was the real age of the celebrity according to our calculation.
The calculation of the shown age took into account the first day of the year in which the movie Don Juan DeMarco was released:
January 1, 1994
And the day in which Marlon Brando was born:April 03, 1924
Since movies usually don't take more than one year to be released since the beginning of the filming process, Marlon Brando may have been one year younger or one year older than the shown age while some scenes of the movie were being filmed.