Being the child of a Monty and a Capp, Rosaline is related to many people in Veronaville. She is a cousin to Emilia and Benvolio Monty. She is the niece of Mercutio Monty, Hermia Monty and Tybalt Capp.
Like all characters residing in Veronaville, Rosaline is named after a character from a Shakespeare play. Rosaline's namesake is Rosaline from Romeo and Juliet, the unseen woman who Romeo was infatuated with before meeting Juliet.