Answer:
Mercutio and Paris
Step-by-step explanation:
The two characters who are related to Prince Escalus are Mercutio and Paris. We learn that Mercutio is related to the Prince during the fight he has with Tybalt, during which Mercutio is dead. We also learn that the Prince is related to Paris during the scene at Juliet's tomb. Towards the end of the play, the Prince confirms these relations.