Emilia Lucca (née Barelli) is an Italian woman who is central in "The Adventure of the Red Circle". She was born in the Posillipo district of Naples as the daughter of a prominent lawyer named Augusto Barelli. She fell in love with Gennaro Lucca, an employee of her father, but when he disapproved the match, the pair ran away together, got married and moved to the United States. Her husband had some work to do and could only contact her through a newspaper. The landlady, who was getting nervous due to the secrecy, contacted Sherlock Holmes for help, who took the case.