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Name: William Henry Leffingwell
Birth: 14 Jun 1876 Woodstock, Ontario, Canada
Death: 19 Dec 1934 Westfield, Union, New Jersey
Father: Wendell Phillips Leffingwell
Mother: Mary Catherine Edwards
Name: William Bruce Leffingwell
Birth: 06 Apr 1850 Iowa
Death: 14 Mar 1920 Cook, Illinois, United States
Father: William Edward Leffingwell
Mother: Celinda Walrod
Name: William Earle Leffingwell
Birth: 29 Jul 1916 Cook, Illinois, United States
Death: 4 Feb 1988 Sun City, Maricopa, Arizona, USA
Father: Earle Leffingwell
Mother: Margaret Dale Simpson
Name: William G Leffingwell
Birth: 26 Aug 1838 Fairview, Penn
Death: 29 Jan 1926 Quincy, Adams, Illinois
Father: James Leffingwell
Mother: Amanda Green
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