Through research I have found that Mary Caroline Brooks' mother was Nancy McKee born April 8, 1799, Ellisburg, Jefferson, NY d. 10/12/1866.m. Daniel Fraser 8/4/1817 m. George Brooks 8/12/1823.
Brooks Children:? boy, Dick, George, Hannah Ward, Elizabeth Sager, Jane Murdock, Mary Caroline m. Benjamin Clark Gunsolus.The brothers are reported to have been ministers.In an 1851 Fredericksburgh, Ont. Census George Brooks, Farmer, Eng., 51; Nancy Brooks, NY, 53 Richard H. Brooks, Farmer, NY, 25; Harriet E. Brooks, NY, 21; Hannah A. Brooks, CW, 11 and Geroge Brooks, CW, 15.The Gunsolus were from Fredericksburgh at one time.Nancy could be McKee, Richard H. could be dick,Harriet E. could be Elizabeth or wife to Richard, Hannah could be Hannah Ward.
FamilySearch - lists Nancy daughter of Joseph, son of Joseph, son of Andrew