What actress earned an Oscar nomination for the first screen appearance of Mary Poppins?

Mary Poppins is a fictional character and the eponymous protagonist of P. L. Travers' Mary Poppins books and all of their adaptations. A magical English nanny, she blows in on the East Wind and arrives at the Banks home at Number Seventeen Cherry Tree Lane, London where she is given charge of the Banks children and teaches them valuable lessons with a magical touch. Travers gives Poppins the accent and vocabulary of a real London nanny: cockney base notes overlaid with a strangled gentility.

Julie Andrews, who played the character in the 1964 film adaptation, won the Academy Award for Best Actress. British film magazine Empire included Poppins (as played by Andrews) in their 2011 list of 100 greatest movie characters.

Mary Poppins first appeared in the short story "Mary Poppins and the Match Man" in 1926, and in several early bits and pieces of the first novel. P.L. Travers later changed the story of the character's origins, stating that it appeared fully formed in her mind in 1934.