They came to America through New York as a young married couple in 1847 with a baby daughter named Marie Rose (Mary Rosa), who is my husband's 3x great-grandmother. They entered the country under the surname of "Burtechert." Their journey from France to Western Ohio is chronicled in a biographical sketch of one of their sons, Joseph John Bulcher, which was published in A Biographical History of Darke County, Ohio.
"It was a long and tedious voyage from Havre to New York, and by canal they proceeded to Buffalo, by lake to Toledo, and by canal to Berlin*, Ohio, where they arrived in the woods. By ox team they came to Wayne township, Darke county, and the father (Francois) pruchased forty acres of land just over the line in Shelby county, for which he paid three dollars per acre."
*This town of Berlin is now known as Ft. Loramie.
According to U.S. census data, the family lived on this land for about twelve years before moving to Patterson Township in Darke County. Francis and Mary Celestine lived here until they died in 1907. They were married for shad twelve children.