there was a Samuel K. Gross married to Mary C. ? listed in the 1930 Census for Sterling, Rice Co., Kansas. He was born around 1867 in Illinois.(died 1933) No children listed. Same people listed in the Allodium township, Graham Co., KS census for 1910. This Samuel's first wife was my great grandmother Ida Maine Camren. They were married around 1887 and divorced in 1892, No kids.
She remarried to Marion Woodside and that is my lineage.
I thought possibly he could be a son of your Samuel K. Gross.
Hope this info helps in some way.
Curt Noffsinger