Helen Rosalie Underwood
- Born: 8 Oct 1856, Calhoun County, Michigan
- Marriage (1): Dr. Granville James Coller M.D. on 2 Oct 1884 in Calhoun County, Michigan 43
- Died: 25 Apr 1936 at age 79
 General Notes:
History of South Dakota, p 1800: daughter of Amasa and Jane Underwood, both natives of the state of New York. She "was graduated in the Chicago Ladies' Seminary, in the city of Chicago, as a member of the class of 1876, and was thereafter, for six years, a successful and popular teacher in the same institution. She is a member of the Degree of Honor and also of the Woman's Club of Brookings.
Helen married Dr. Granville James Coller M.D., son of James Losey Coller and Amanda Mulvina Richart, on 2 Oct 1884 in Calhoun County, Michigan.43 (Dr. Granville James Coller M.D. was born on 6 Nov 1853 in Macon, Lenawee County, Michigan,49,50,51 died on 24 Oct 1950 in Los Angeles, California 52 and was buried in Greenwood Cemetery, Brookings, Brookings County, South Dakota.)
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