Charlotte De Gontaut Biron 
Charlotte De Gontaut was born on July 19th, 1852. She died at the age of 80 on June 27th, 1933 in Brussels, Belgium.General Notes
SOURCES:
"Ancestors/Descendants of Royal Lines" (Contributors: Manuel Abranches de Soveral, Reynaud de Paysac, H.R. Moser <Burke Peerage>, L. Orlandini, O.Guionneau, L.B. de Rouge, E. Polti, A.Terlinden <Genealogy of the existing British Peerage, 1842>, L. Gustavsson, C. Cheneaux, E. Lodge, and S. Bontron <Brian Tompsett>) http://geneastar.org.
‌Charlotte De Gontaut and Charles De were married in a religious ceremony on June 1st, 1876 in Paris, France.