He is listed as Samuel C Awbrey on the MO death certificate site. I didn't find Ethel.
They did have a daughter Elizabeth in the 1940 census. She married William E. Ham in Jackson co., June 1, 1940. According to the marriage license William was from Norman, OK.
On Find A Grave, Elizabeth and William are in the IOOF cemetery in Norman OK
Ethel could have gone to live with her daughter after Searcy died. IVY