Sara Martin was an American blues singer, in her time one of the most popular of the classic blues singers. She was billed as "The Famous Moanin' Mama" and "The Colored Sophie Tucker". Martin made many recordings, including a few under the names Margaret Johnson and Sally Roberts. Wikipedia*
On the C-SPAN Networks:
Sara Martin has five videos in the C-SPAN Video Library; the first appearance was a 2013 Call-In. Most appearances with Caroline Keinath (2), Michelle Marchetti Coughlin (2). Most common tags: Adams, John Quincy, Adams, John, Early American History (1600-1850).