Buquin, who was trying to compile a genealogy of the D'Hauterive family, in particular the descendants of Claude Bernard D'Hauterive, wrote the addressee requesting certain data. The addressee two years before had written M. Bernard de Marigny de Morestel asking for information on Joseph Vallière D'Hauterive, who had died in New Orleans in 1797. Now, Buquin asked the addressee for the names of the four brothers of Joseph Vallière D'Hauterive, who also went to Louisiana, and the death dates of the three who were buried there.
