Why did johnny go to the lyte house?

Johnny went to the Lyte House to retrieve the silver cup that belonged to his father, which was being held by the loyalist merchant, Merchant Lyte. He believed that the cup was a crucial piece of his family's heritage and hoped to prove his father's identity and reclaim his family's honor. Additionally, the visit was significant as it highlighted the tensions of the time, illustrating Johnny's growing involvement in the revolutionary sentiments brewing in Boston.