Joy Page, the stepdaughter of Warner Bros. studio chief Jack L. Warner who earned her place in film history playing the dark-haired Bulgarian newlywed in "Casablanca," has died. She was 83.

Page died of complications of a stroke and pneumonia Friday in Los Angeles, said her son, Gregory Orr.

She was a 17-year-old high school senior in 1942 when she landed the role of Annina Brandel in "Casablanca," the 1942 film starring Humphrey Bogart, Ingrid Bergman and Paul Henreid.

As the newlywed refugee in need of exit visas so she and her husband can get out of Casablanca, the character is faced with the moral dilemma of giving herself to Capt. Renault (Claude Rains) in exchange for the documents. But Bogart, the worldly proprietor of Rick's Cafe Americain, intervenes by letting her husband win at roulette, making him able to buy the visas.

It was Page's first film role.

Although her movie mogul stepfather wasn't thrilled with a family member becoming an actor, Page had been attending acting classes at the studio taught by acting coach Sophie Rosenstein, who suggested that she read for the role.

Page had read an early draft of the "Casablanca" script that Warner had brought home and was not impressed.

"She told me she thought it was corny and old fashioned," Orr said.

But after learning that Bergman had been cast in the movie, he said, she had a change of heart.

"She felt that would change the feeling of it, and it would become worthy and truthful because of what Bergman would bring to the picture," said Orr, adding that his mother "was very fond of the experience" of making "Casablanca."

"She said Bogart had been very nice to her; he was very patient and came in and rehearsed with her. And she admired Ingrid Bergman very much," he said.

Although Warner was pleased with Page's work in the film, he would not sign her to a studio contract or cast her in other Warner Bros. movies.

She went on to play Ronald Colman's daughter in director William Dieterle's "Kismet," a 1944 MGM adventure-fantasy co-starring Marlene Dietrich.

Among her other films are "Man-Eater of Kumaon" with Indian actor Sabu (1948); "Bullfighter and the Lady" with Robert Stack (1951) and "The Shrike" (1955) with Jose Ferrer and June Allyson.

She also worked in television, including "The Ford Television Theater," "Studio 57," "Cheyenne," "Wagon Train" and "The Swamp Fox" before retiring from acting in 1962.

Born Nov. 9, 1924, in Los Angeles, she was the daughter of silent-screen actor Don Alvarado (who was also known as Don Page) and the former Ann Boyar, who married Warner after she and Alvarado divorced.

In 1945, Page married actor William Orr, who later became a Warner Bros. vice president and film producer. They divorced in 1970.

In addition to her son, she is survived by her daughter, Diane Orr; and her half sister, Barbara Warner Howard.