I found headstones for these folks in the Ft. Denaud Cemetary in LaBelle, Hendry County, Florida.
William W. Hooks September 24, 1916 to March 9, 1979
Myrtle R. Hooks June 26, 1923 to November 25, 1986
I was very surprised and pleased to see a familiar name in this cemetary. However,I don't know which line they belong to. Anyone recognize them? I have additional photos of the plot if they are your decendants, and would be pleased to forward them on to you.