Susannah was born on August 19th, 1740. Susannah's father was David Crosby and her mother was Reliance Hopkins. Her maternal grandparents were Samuel Hopkins and Lydia Rich. She had three brothers and four sisters, named David ,Jr., Abner, Eli, Reliance, Sarah, Moses and Huldah. She was the second oldest of the eight children. She died at the age of 78 on January 1st, 1819.