Katherine Prince, her sister Leslie, and her daughter Susie Livermore Sutton (1855-1938) were friends and neighbors to James McNeill Whistler in Lowell, Massachusetts, where Whistler was born in 1834. Whistler and his family moved to Connecticut in 1837, but during their time in Lowell, the Whistlers had become close friends of the Prince family and remained friends with the daughters of the Prince family over many decades. Frequent trips to England and periods of residency in London kept Katherine Prince in close touch with Deborah Whistler and her brother James. Susie Livermore Sutton was a lifelong associate of Whistler. These mementos of an extended family friendship show a familial side of Whistler, who enjoyed the company of his sister Deborah, and their friends in the Prince family.