Are you looking for evidence of an earlier marriage for William Edwards? On his marriage certificate (marriage to Belle White) in October 1886, it states he remarried in ABOUT 1886? But if Belle is his remarriage, then the time of his remarriage is not about 1886 - it's really definitely for sure 1886. Oh - I get it - maybe that's a typo and you meant some other year.
I still can't tell whether you think William and Belle divorced? Or whether you are chasing an early divorce of William's. Nothing in your message suggests Belle and William divorced. He could have died, and then Belle remarried.
So ... I'm corn-fused! :D
What matters is YOU know what you meant and the answer still lies, probably, in a county courthouse. But if it's William's earlier life you are after, we could help track him back in time.
Here's that marriage you mention, of Belle's, per MOMS transcription. Helps to state county names in cases involving county records:
Wrinda B White married Elmer E. Dayton in Mille Lacs County, Minnesota 24 January 1893