Sir; I checked Stephen B. Yates's obituary from the Colusa Herald, Tuesday, January 19, 1937 and his wife's madien name was Eva Thrift, B - 1881 & D - 1979. She is also buried in Section G alongside her husband. They had 2 daughters, Beaterice Yates that lived in Maxwell & Mrs. Walter Minges from Stockton.

I hope this helps you.
Sincerely,
John L. Morton
Colusa County Historical Researcher