Ancestry.com. The battle of Groton Heights [database on-line]. Provo, UT: Ancestry.com Operations Inc, 2005.Original data: The battle of Groton Heights : a collection of narratives, official reports, records, etc. of the storming of Fort Griswold, the massacre of its garrison, and the burning of New London by British troops under the command of Brig-Gen. Benedict Arnold on the sixth of September, 1781. New London, Conn.: C. Allyn, 1882.