THIEFFRY Pierre Joseph (Dit Pierre François) 1739
  | DERRET Marie Angélique 1738 - 1804
  | DELCOUR(T) DELECOUR(T) Charles Guillaume Louis 1724 - 1812
  | MANHIN Marie Jeanne 1721 - 1803
  | | | DECERF Jacques François
 | DUVELLIER Marie Madeleine
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THIEFFRY Louis François 1767 - 1835
  | DELCOUR(T) DELECOUR(T) Marie Cécile 1765
  | BOURGOIS Louis
 | DECERF Julie Joseph 1751 - 1825
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THIEFFRY Pierre François 1792 - 1837
  | BOURGOIS Marie Madeleine Joseph 1791
  | COCHETEUX Pierre Louis
 | LEFEBVRE Marie Joseph
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THIEFFRY Jean Edouard 1819 - 1882
  | COCHETEUX Palmyre 1820
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THIEFFRY Louis 1851
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