Hi Jan,
A few bits for Mary S. McKenzie......
She marries Charles H. Hillman in 1884 Cambridge, Mass.
https://familysearch.org/pal:/MM9.1.1/NW5P-8JT (click on the right side -view document)
She dies in 1904 in Lynn, Mass. Charles H. Hillman is the informant.
https://familysearch.org/pal:/MM9.1.1/NWLZ-VGZ (click on the right side again to see original)
1900 U.S. Census
Malden City, Mass. address 97 Salem St.
Hillman, Charles H., 37, head, reporter Boston Herald !! b. Mass.
Hillman, Mary S. 36, wife b. Mass. (no. of children 1)
Hillman, Flora M. 13, daughter at school b. Mass.
McKenzie, Margaret 65, head, b. Canada, widow (no. of children 2)
McKenzie Flora A. 40, daughter, milliners, b. Canada, single
Poole, Samuel 49, boarder, brick mason, b. Maine, single
McKenzie, Mary A. 24, servant, b. Canada, single
Cheers,
DB