Sophronia Underwood's maiden name was Sophronia (or Elizabeth Sophronia) Fenwick. She was the daughter of Cornelius M. Fenwick & CeliaAnn (Celian) Cissell. Sophronia was born in Raywick, Marion Co. KY on Feb. 13, 1866. She married Isaac V. Brewer (son of William Allen Brewer & Mary Jane Stillwell) on Aug. 7, 1884, at St. Francis Xavier Catholic Church in Raywick KY. They had 5 children: Frances Sophronia Brewer, Alexander "Jack" Brewer, Charles George Brewer, Thurman Brewer, and Isaac V. Brewer. Sophronia's husband died in a farming accident in Wyanet, Bureau County, IL on Nov. 2, 1893.
After his death, Sophronia married Eli Underwood. They moved to Austin, Mower County, MN and had 7 children.