Frances Cadwallader 
Frances was born on June 25th, 1781. Frances' father was John Cadwallader and her mother was Williamina Bond. She was an only child. She died at the age of 61 on March 25th, 1843.General Notes
SOURCES: LDS FHL Ancestal File # (familysearch.org)
"Ancestors/Descendants of Royal Lines" (Contributors: F. L. Jacquier {History of Charlemagne" by Christian Settipani}; L. Orlandini, Manuel Abranches de Soveral, Reynaud de Paysac, F.L. J P de Palmas {Aurejac et Tournemire; Frankish line; The Complete Peerage}, Jacquier {Genealogy of Lewis Carroll, Justin Swanstrom, The Royal Families of England Scotland & Wales by Burkes Peerage; Debrett's Peerage & Baronage; Table of descendants French Canadian Genealogical Society; Families of Monfort-sur-Risle & Bertrand de Bricquebec; The Dukes of Normandy, XXXXI}, A. Brabant {"Dynastie Montmorency, Michel d'Herbigny}, Paul Leportier, Claude Barret, H.R. Moser {Burke Peerage}, O.Guionneau, L.B. de Rouge, E. Polti, N. Danican {Britain's Royal Families; Buthlaw, Succession of Strathclyde, the Armorial 1961-62} A.Terlinden {Genealogy of the existing British Peerage, 1842}, L. Gustavsson, C. Cheneaux, E. Lodge, S. Bontron {Brian Tompsett}, R. Dewkinandan, H. de la Villarmois, C. Donadello; Scevole de Livonniere, H. de la Villarmois, I. Flatmoen, P. Ract Madoux {History of Morhange; Leon Maujean; Annuaire de Lorraine, 1926; La Galissonniere: Elections d'Arques et Rouen}, Jean de Villoutreys {ref: Georges Poull}, E. Wilkerson-Theaux {Laura Little}, O. Auffray... http://geneastar.org.
"Ancestors/Descendants of Leopold von Habsburg" http://www.geneastar.org.
Frances and David Montagu were married in a religious ceremony on December 16th, 1799. They had a daughter named Mary.