my husband is gr.gr.grandson of Isaac Jarrett III, Isaac was born about 2/23/1848. his first wife was Hannah Lightfoot, second wife Lydia(Smith) Jones, third wife Anna Steinman. we have Isaac and Lydia having at least three children. Florence b. abt. 4/20/1900, Edgar b. abt. 9/2/1893 and Mary Katherine b. abt. 1898. spouse Herbert Hazen. do not know of Lydia,s children by first husband. Isaac,s parents were Isaac Jarrett and Sarah Koffman, grandparents were Isaac Jarrett and Mary Altop. we have not found anything past Isaac I. hope you find what you are looking for.