They might be these people, years are correct, locations are not. This Edmonia died between 1900 and 1910 census, maybe you'll strike it rich and locate a death record in Lawrence, Douglas, KS for her? No marriage record found.
In 1880, David's sister-in law Mary Taylor is living with them. There are 2 possibilites for Edmonia Taylor in 1870 census - one living with Drake family in Lawrence township and one in a different township- that happens to have a sister of the correct age to be Mary? Might be a place to start. PS this region of KS was very active in abolitionists, underground railroad activity, establishing free state etc.
U S Census, 1900 ED 65 Lawrence city Ward 6, Douglas, KS
https://familysearch.org/pal:/MM9.1.1/MMTN-DFQ
head David Logan M 65 Feb 1835 MO married abt 1875
wife Edmonia Logan F 44 Apr 1856 MO 8 children 6 living
son Clifford Logan M 16 Oct 1884 KS
dau Leona Logan F 12 Apr 1888 KS
dau Emma Logan F 9 Dec 1891 KS
son Aldon Logan M 6 Apr 1894 KS
U S Census, 1910 Lawrence Ward 6, Douglas, KS
self David Logan M 77y KY widowed
son Aldon L Logan M 16y KS
US Census, 1880 Lawrence, Douglas, KS
https://familysearch.org/pal:/MM9.1.1/MFPY-3NR
self David Logan M 40 MO
wife Edmonia Logan F 25 MO
son Freddie Logan M 6 KS abt 1874
dau Arvilla Logan F 1 KS abt 1879
sister-in-law Mary Taylor F 13 KS
U S Census, 1870 Wyanette, Quindaro, KS
https://familysearch.org/pal:/MM9.1.1/MCJ1-1JG
Joseph Taylor M 50y MO
Mary Taylor F 32y MO
Edmonia Taylor F 13y abt 1857 MO
William Taylor M 8y KS
Lindia Taylor M 6y KS
Lucy Taylor F 4y KS
Mary E Taylor F 2y KS possible the sister-in-law above?
OR
U S Census, 1870 Lawrence, ward 5, Douglas, KS
Household of Lucy Drake
https://familysearch.org/pal:/MM9.1.1/MCJK-B2F
Edmonia Taylor
est birth 1855 Female Mulatto age 15y birthplace: Kansas
