The village of Nanichiestawack, or Nawchestaweck ("place of safety"), located near present-day Woods Bridge at Muscoot Reservoir, was destroyed during the Pound Ridge massacre in 1644. In the early 20th century, Alanson Skinner unearthed the Throgs Neck site, on the peninsula Throggs Neck, and sites at Clasons Point in the Bronx, which he identified as being once occupied by Siwanoy, as well as other peoples. Native people attacked a European ship from this site in 1619. Religion Two glacial erratic boulders named Grey Mare and Mishow, located on Hunter Island, were spiritually significant to the Siwanoy. Here the Siwanoys practiced their sacred ceremonies, and two sachems are believed to be buried at Mishow; the Siwanoys believed the boulders to have been placed there by their guardian Manitou (the spiritual, omnipresent life force that manifests itself in everything). Many Siwanoys likely became Christianized; the Siwanoy sagamore Wampage I was one of these, taking John White as a baptismal name. 16th-century history Conflict with European colonists The western bands of the Wappinger, including the Siwanoy, were at war with the Dutch from 1640 to 1645. Part of this period is often referred to as Kieft's War, and is said to have cost the lives of some 1,600 Wappinger refugees. Thus, tensions between the colonists and the indigenous people of the area were extremely high at this time. A group of Siwanoy, led by Wampage I, killed Anne Hutchinson, six of her children, and nine others in August 1643, near Split Rock, an ancient landmark. The only survivor was Hutchinson's nine-year-old daughter, Susanna - possibly spared because of her red hair - who "became the wife of an Indian Chief, residing in a settlement near the Split Rock". It has been written that Wampage himself was the murderer of Hutchinson and that he adopted the name of Anhōōke due to a Mahican custom of taking the name of a notable person personally killed. In February 1644, the entire village of Nanichiestawack was wiped out by 130 Dutch mercenaries under Capt. John Underhill. The surprise attack, known as the Pound Ridge massacre, took place while a large number of Siwanoy and Wecquaesgeek people were gathered together for a corn festival. The Dutch forces slaughtered between 500 and 700 indigenous people, including women and children, who were forced into their homes and burned alive. Treaty with Thomas Pell On June 27, 1654, sagamores Shāwānórōckquot (Shanarockwell),