An Indirect Lead to The Elusive Sarah Gilbert?

In the last post, I mention Ancestry.com's excellent collection entitled, "Missouri Marriages 1805-2002." As I tried it out, I may have come across an indirect lead to my elusive ancestor, Sarah Gilbert.

The only matters of record that I have ever found concerning Sarah Gilbert are her 1867 marriage to Ezekiel Johnson in Clay County, Missouri, and her residence with her husband and children in Kansas City on the 1880 census. Other than those things, Sarah Gilbert is a phantom. There is no one alive today who knew her or saw her. There are not even any hearsay stories about her, except the persistent and unsupported rumor that she was an Indian. That's it; that's all.

Based on the fact that she seems to have disappeared after the 1880 census, I have surmised that she may have died sometime after 1880. No children appear to have been born to her after 1880.
Today, as I checked out the new Missouri marriages collection on Ancestry.com, I came across an 1885 marriage in Jackson County (Kansas City) between Ezekiel Johnson and one Rena Neal. If this is the same Ezekiel Johnson who married Sarah Gilbert, this may lend some credence to the notion that Sarah Gilbert died sometime after 1880. More investigation need on this, but it could be an indirect lead to Sarah Gilbert.