Split Rock is also the location near where, in 1643, Anne Hutchinson and members of her family were massacred by Native Americans of the Siwanoy Tribe. Her daughter, Susanna, the only member of the family to survive the massacre, was at the rock during the time of the attack, which took place at the house, a distance away. In 1904, the New York State Legislature approved the placement of a bronze tablet on Split Rock in honor of Anne Hutchinson. The tablet was installed in 1911 by the Colonial Dames of New York. However, it was stolen in 1914. The plaque reads: