It is said that William wanted to go to California, but Sadie did not, so he just left.
"Minnesota, County Marriages, 1853-1983", FamilySearch (https://www.familysearch.org/ark:/61903/1:1:VKNY-WN6 : Sat Mar 09 13:35:18 UTC 2024), Entry for William A McGaughey and Sadie Abbie Holman, 1910.