Jean Francois Dufour(15 May 1783 - 6 Jun 1850)
Mary (Polly) Critchfield(11 Mar 1789 - 4 Mar 1876)
b. 11 Mar 1812, Vevay, Switzerland Co., IN
d. 11 Aug 1917, Sacramento, CA
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b. Grey Abbey, Down County, Irelend
d. San Francisco, CA
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