Maria, wife of Sam Tull...
I'm pretty sure the sunken headstone, or "unknown's" headstone, says father, but since I could only see the bottom half of the letters while at the cemetery it's hard to say for sure.
Varying/additional information from the Sunset Cemetery plot locator:
Julia E. Strasser, died 8/3/1887.
Carrie E. Drury, 0.
William Blankenship Tull, died 1/14/1932.
Mrs. William Tull, died 3/10/1920.
Gertrude Tull, died 3/3/1890 (only a possible match).