After the Pequot War of 1637, as a conquered Pequot, Cassacinamon was placed under the authority of English ally, Uncas, of the Mohegan tribe. In 1638 Roger Williams wrote the first writing referencing Robin Cassacinamon, when Cassacinamon went to the home of John Winthrop, Jr. in Fort Saybrook to become a servant and inquire about a Pequot woman who was a servant for the Winthrops and who Uncas hoped to marry. Eventually after living with the Winthrops for several years, Cassacinamon, learned English and was able to serve as a translator and he helped the Pequots in his town to request to be under English control rather than under Uncas. By 1655, Cassacinamon was appointed by the United Colonies as governor of the Pequots in two settlements, Nameaug (New London, Connecticut) and Noank (Groton, Connecticut). During King Philip’s War in the 1670s, along with Onecoand Harman Garrett, Robin Cassacinamon executed Canonchet, and Cassacinamon was commended for his service during the War.
- Shawn G. Wiemann, Lasting Marks: The Legacy of Robin Cassacinamon and the Survival of the Mashantucket Pequot Nation (University of New Mexico, Dissertation, 2011) http://digitalrepository.unm.edu/cgi/viewcontent.cgi?article=1082&context=hist_etds