I would suggest searching in Gem County, as I found the following:
There is a marriage for Albina Holly and Ray Kincaid Apr. 7, 1923 in Emmett, Gem Co., Idaho.
Found Joe/Bessie and family 1920 Census, Emmett, Gem Co., Idaho - email me off-list and I will email you the image if you like. email@example.com
Joe and Bessie are in Kuna, Ada Co., Idaho in 1930, so you might try Ada or Canyon county cemeteries for them.