If you enjoy sourcing and a challenge, there is an entire family with only a single character last name who have recently been orphaned.
Poor ol Ruth Ellen M married Milton L H. Fortunately her parents Silas E M and Synthia A N had birth and death dates. From that I was able to find https://www.findagrave.com/memorial/32842536 and https://www.findagrave.com/memorial/32842535/silas-e-mackenzie which looks like it might be them. A quick search for sources for a Silas Mackenzie found several that might be him. I have put those under research notes on his profile https://www.wikitree.com/wiki/M-728
I don't have the time to dig into this right now... There seem to be many ways to spell Mackenzie/McKinsey/Mckinsie
Another clue for Ruth Ellen
"Ohio, County Births, 1841-2003," database with images, FamilySearch (https://familysearch.org/ark:/61903/1:1:Q238-GXBP : 9 March 2018), Ruth Ellen Mckenzie in entry for Edgar Hammond Heddleston, 11 May 1877; citing Birth, Grandview Township, Washington, Ohio, United States, county courthouses, Ohio; FHL microfilm 2,293,028.