Question: What is the date of birth of Sophie De Marbois-Lebrun, Duchess Of Plaisance's father?
Sentence (from "Sophie de Marbois-Lebrun, Duchess of Plaisance"): (1785–1854) was born in Philadelphia, Pennsylvania, where her father, François Barbé-Marbois, was serving as French Consul-General in the United States.
Relevant evidence: Yes