Mary Duke Biddle
Mary Lillian Duke Biddle (November 16, 1887 – June 14, 1960), was an American philanthropist.
Personal facts
| Birth date | November 16, 1887 |
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| Birth name | Mary Lillian Duke |
| Date of death | June 14, 1960 |
| Parents | Benjamin Newton Duke |
| Spouse | |
| Children |