In the famous line "Romeo, Romeo, wherefore art thou Romeo?" from Shakespeare's "Romeo and Juliet," Juliet is not asking where Romeo is located physically. Instead, she is lamenting his identity as a Montague, a family that is sworn enemies of her own family, the Capulets. The word "wherefore" means "why," so Juliet is questioning why Romeo must be who he is, specifically why he has to belong to a family that stands against hers.
This is underscored in her preceding lines, where she expresses her frustration with the circumstances of their love: "O, be some other name! / What's in a name? That which we call a rose / By any other name would smell as sweet." (Act 2, Scene 2). This indicates her longing for Romeo to be free of his family identity, suggesting that the feud between their families is the source of her sorrow. Thus, Juliet's plea highlights the tragic nature of their love, as it is constrained by the familial conflict.