Did Olivia de Havilland have any children?
Yes, Olivia had a son--Benjamin--with Marcus Goodrich and a daughter--Gisele--with Pierre Galante.

How are Joan Fontaine and Olivia de Havilland related?
Joan (de Havilland) Fontaine is Olivia's younger sister.

How many times was Olivia de Havilland nominated for an Oscar?
Miss de Havilland received 5 Oscar nominations. She was nominated for Best Supporting Actress for her role in Gone With The Wind (which she lost to co-star Hattie McDaniel). Olivia also received two unsuccessful Best Actress nominations for The Snake Pit and Hold Back The Dawn.  

However Miss de Havilland did taste victory, becoming one of the elite actresses to win multiple Best Actress Oscars for her roles in To Each His Own and The Heiress!