- She had 3 children and 2 husbands. With first husband, Paul Wilson Davis, she had 2 children, Marthesta Davis (1939-1939) and Paul Wilson Davis Jr. (1942-????). With second husband, Calvin Ponder, they had one child, Calvina Evelyn Ponder (1949-????).
- Performed in the musical comedy act, Martha Davis & Spouse, with her husband Calvin Ponder.
- She has played return engagements in Philadelphia, Baltimore, Detroit and Chicago.
- Martha Davis, the Blue Angel pianist, says that if she diets she can't play well. Her husband and partner, Calvin Ponder, said: "She can only play a piano if she outweighs it.".
- Used her 1st husband's last name (Davis) as her stage name.
- Parents: Morgan Robertson 1887-1952 and Pearl Groomer Robertson 1884-1968.
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