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Jean William Fritz
Piaget
Born on August 9, 1896 in
Neuchâtel
Deceased on September 16, 1980 in
Geneva
, at the age of 84 years
Family
Married in 1923, with
Valentine Madeleine Châtenay
(c. 1900 - ), issuing
Private
Private
Private
Occupations
psychologue
biologiste
Genealogy
Descendants
Kinship Calculation