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Globally, Rosaline (Rosaline ) is a common girly first name. The forename Rosaline is habitual in Guam, where it is quite a common feminine name, Cameroon, where it is quite a common predominantly feminine, but scarcely male name, and South Africa, where it is quite a rare girly name. Not in comparison with a country's population, it is the most numerous in Cameroon, Philippines, and the United States. Much less frequently, Rosaline is the last name as well as the forename.
Rosaline is also a name for the fictitious and mythical characters: Rosaline , the character in Romeo and Juliet and Rosaline , the operatic character in the opera Love's Labour's Lost.