Around 1969, in a Charles Foster Kane/Susan Alexander like move, Welles renamed Olga "Oja Kodar" and started building her up Svengali-style to become a big star. As in Citizen Kane (1941), it didn't work.
Hers and Welles' first project together, which began filming in 1967, was The Deep (1970) starring Jeanne Moreau and Laurence Harvey. It was abandoned in 1969 and left unfinished - one of the couple's many projects that fell through.
Orson Welles and Oja (real name: Olga Palinkas) met in Zagreb in 1962 while he was making a film (The Trial (1962)). He reportedly wrote a letter to her which he never gave but kept in his pocket until they met again in 1966. They immediately began their relationship.
Oja never became the fourth Mrs. Welles. A year after Orson's death, the third Mrs. Welles (actress Paola Mori) and Oja finally agreed on the settling of his will. On the way to their meeting to sign the papers, however, Mrs. Welles was killed in a car accident.
Member of the jury at the Venice Film Festival in 1991.