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Gertrude Isabelle
de Thier
dame de Grimonster
Born on March 2, 1719 in
Liège
Deceased on February 20, 1770, at the age of 50 years
Parents
François Arnould Charles de Thier
(1685 - 1744), magistrat
Marie Josèphe Justine de Plenevaux
(1698 - 1738)
Family
Married on October 20, 1743, with
Pierre François Lambert Amand van den Steen de Jehay
(1705 - 1761), vicomte d'Harduemont, ministre plénipotentiaire et conseiller du prince-évêque de Liège à la cour de Louis XV, roi de France, issuing
Lambert Armand Joseph
(1747 - 1824)
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