The Mailly family's immigrant ancestor to the United States was Augustine Mailly, who came from Lyon, France in the early 1800s. He married Mary Ann Thomas (daughter of Samuel and Rachel Wilson Thomas, and granddaughter of David and Mary Corbit Wilson) in 1831. They eventually settled in Mary Ann's hometown, Cantwell's Bridge (present-day Odessa), DE. When she died in 1845, Mary Ann's cousin, Daniel Corbit, was named trustee of her estate to provide for the care of her children.
From the description of Papers, 1818-1918. (Winterthur Library). WorldCat record id: 84665157