Denyse's marriage and death record (ca. 1888 Denver Colorado, USAand 1936 Vancouver, British Columbia, Canada) state that her father is the "COUNT du JARDIN."
I have been reading.
Le COMTE du JARDINS,GEORGE LOUIS LECLERC, le COMTE DE BUFFON (1707 - 1788) who had one surviving son.In 1739 he was appointed keeper of the Jardin du Roi Jardin du Roi (now called the Jardin des Plantes).
Perhaps Denyse des Jardins may descend from this family:Surnoms ca. 1780s:Montbard, Burgundy:LeClerc, Benjamin;Marline, Marie Christine; and Blaisot, Georges.
Ici est histoire de famille de Comte du Jardins:
GEORGES LOUIS LECLERC, French naturalist /author, nee Montbard, Burgundy on Sept. 7, 1707, the son of a magistrate in the local sovereign court of justice (parlement) - a family of the new nobility - wealthy Burgundian landowners.
Pere: BENJAMIN LECLERC, a local official in charge of the salt tax;
Mere:ANNE-CHRISTINE MARLINE also from a family of civil servants.
Georges was named after his mother’s uncle (his godfather) GEORGES BLAISOT, the tax-farmer of the Duke of Savoy for all of Sicily. In 1714 Blaisot died childless, leaving a considerable fortune to his seven-year-old godson. Benjamin Leclerc then purchased an estate containing the nearby village of Buffon and moved the family to Dijon acquiring various offices there as well as a seat in the Dijon Parlement. Probable that he graduated from the Jesuit college in Dijon and a diploma from the Faculty of Law located in Dijon.
In 1752 Buffon married Marie-Françoise de Saint-Belin-Malain, the daughter of an impoverished noble family from Burgundy, who was enrolled in the convent school run by his sister. Madame de Buffon’s second child, a son born in 1764, survived childhood; she herself died in 1769. When in 1772 Buffon became seriously ill and the promise that his son (then only 8) should succeed him as director of the Jardin became clearly impracticable and was withdrawn, THE KING RAISED BUFFON'S ESTATES IN BURGUNDY TO THE STATUS OF A COUNTY - AND THUS BUFFON (AND HIS SON) BECAME A COUNT.BUFFON DIED IN PARIS IN 1788.