The text begins with a brief English ancestry of the Lawrences. The English immigrant ancestor, John Lawrence arrived in Massachusetts c.1635. By 1662 he was located in Groton, Massachusetts, with his first wife, Elizabeth. Major Samuel Lawrence is the great-great grandson of John Lawrence and was born in Groton in 1754. His descendants are carried down for three generations making a total of eight generations described through detailed biographical notices of prominent family members. The genealogy ends at the beginning of the twentieth century. The appendices cover the grant of crest, will extracts, baptisms, family Bible records and mortgage records, along with a story by Mary Fosdick, A Minute-Man. Allied families include: Amory, Appleton, Brooks, Cunningham, Derby, Fosdick, and Foster. Data on these families has been drawn from a diverse collection of sources including: circulars, personal letters, printed memoirs, biographical publications, college class reports; state, municipal, church, and probate records; county and town histories; and, genealogies and family registers. A full-name index adds to the value of this work.