Mary (Polly) Simpson Leach

August 1, 1787–September 4, 1867

Born at Pilling, Lancashire, England; daughter of Elizabeth and John Simpson. Buried at Brownville, Nemaha County, Nebraska. 1 (See Document 1.2, first mentioned here)


  1. [1] “Mary Leach,” Patriarchal Blessings, 1833–2011 (closed to research), CHL. Susan Easton Black and Harvey Bischoff Black, eds., Annotated Record of Baptisms for the Dead, 1840–1845: Nauvoo, Hancock County, Illinois (Provo, UT: Center for Family History and Genealogy, Brigham Young University, 2002), 3:2164–2165. “Lancashire, England, Marriages and Banns, 1754–1936,” database, (, accessed Oct. 2014), Mary Simpson; from Lancashire Archives, Preston, England. 1850 U.S. census, District 21, Pottawattamie Co., Iowa, n.p., Mary Leach, NARA. Find a Grave, database and images (, accessed Oct. 2014), memorial no. 64890757, Mary Leach; Walnut Grove Cemetery, Brownville, NE. “Family Tree,” database, FamilySearch (, accessed May 2016), Mary Simpson, Sen. K6FS-SW1 .