The main figure in Ulrich's work, Martha was a midwife who kept a detailed diary of her life in 18th-century Maine. She balanced her work as a midwife with her duties in the household and documented her experiences, thoughts, and community interactions.

Martha's husband, a land surveyor, and town tax collector. He worked in various roles to support the family and occasionally faced financial difficulties that impacted family dynamics.

Martha and Ephraim's second-oldest son, who took on responsibilities in the family business. He had a complex relationship with Martha, characterized by some familial conflicts but also support in their later years.