Alexandre De Pourtales 
Alexandre De was born on March 23rd, 1811 in Switzerland. He died at the age of 72 on June 3rd, 1883.General Notes
SOURCES: "Ancestors/Descendants of Royal Lines" (Contributors: Manuel Abranches de Soveral, Reynaud de Paysac, F.L. Jacquier <Justin Swanstrom>, 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.
They had a daughter named Louise Elizabeth De.
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Children
Louise Elizabeth De Pourtales
Louise Elizabeth De was born on September 25th, 1837 in Switzerland. She died at the age of 68 on September 10th, 1906.