Mary C. Sawtelle 
Mary C. was born on May 28th, 1838.1 She had a sibling of unknown gender named A. W.. She died at the age of 18 on June 13th, 1856.1 
Details of Mary C.'s family with Lyman Smith
1 phelps.FTW @ Tree #1309
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #0105, 0105.ftw, CT State Library Hale Collection of Cemetery Inscriptions Vol. 57 Pg. 187
Further sources/citations:
World Family Tree Vol. 3, Ed. 1 @ Tree #0105, 0105.ftw, CT State Library Hale Collection of Cemetery Inscriptions Vol. 57 Pg. 187