Conversation so far:
Where was Harriet Tubman born?
Harriet Tubman was born in Dorchester County, Maryland.
When was Harriet Tubman born?
As with many slaves in the United States, neither the exact year nor place of Harriet Tubman's birth is known, and historians differ as to the best estimate.

Question: Who was her family?
Self-contained rewrite: Who was Harriet Tubman's family?