Question: What is the birthdate of this American dancer, who worked at Grace's Little Belmont, where Wild Bill Davis was a featured summer performer?
Sentence (from "Grace's Little Belmont"): Wild Bill Davis and his swing and jazz quartet were featured summer performers from 1950 through the mid-1960s, and Elvera M. "Baby" Sanchez, mother of Sammy Davis, Jr., worked at the bar.
Relevant evidence: Yes