John William Gannon

M, b. April, 1874, d. September 7, 1915
Father*William Gannon b. November, 1846
Mother*Ellen Marie Dorsey b. May 1, 1850, d. May 29, 1924
     John William Gannon was born in April, 1874 in Cleveland, Cuyahoga County, Ohio.1 He was the son of William Gannon and Ellen Marie Dorsey. John William Gannon married Barbara Kotzer on July 25, 1903 in Chicago, Cook County, Illinois. Note that Barbara's name is given as Mary in the marriage record.2 John William Gannon died on September 7, 1915 in Chicago, Cook County, Illinois, at age 41.3 He was buried in Mount Olivet, Chicago, Cook County, Illinois.4

Children of John William Gannon and Barbara Kotzer


June 5, 1880Hitchcock Street, Cleveland, Cuyahoga County, Ohio5
June 1, 1900Wliiam's work is listed as switchman, John as a clerk in an office, Frank as a foreman in a printing shop, Edward as a clerk ikn a bookstore, Kathleen and Margaret as dressmakers, and William and George at school.Cottage Grove Avenue, Chicago, Cook County, Illinois1
June 23, 1910Bishop Street, Chicago, Cook County, Illinois6
ChartsPater Familias O'Dea Descendant Chart (Indented)
Thomas (Darby) O'Dea Descendant Chart (Indented)
Last Edited26 Jan 2021


  1. [S89] June 1, 1900 Census Record, Provo, Utah, Roll: 285; Page: 1A; Enumeration District: 1006; FHL microfilm: 1240285.
  2. [S433] Illinois, Cook County Marriages, 1871-1968, online, : 11 March 2018), John W. Gannon and Mry Kotzer, 25 Jul 1903.
  3. [S87] Illinois, Cook County Deaths, 1878-1922, online
  4. [S87] Illinois, Cook County Deaths, 1878-1922, online, Although the death record indicates that John was buried in Mount Olivet cemetery, there is no record of his burial there.
  5. [S90] June 5, 1880 Census Record, Provo, Utah, Roll: 1007; Family History Film: 1255007; Page: 312D; Enumeration District: 038; Image: 0631.
  6. [S95] June 23, 1910 Census Record, Provo, Utah, Roll: T624_275; Page: 20B; Enumeration District: 1272; FHL microfilm: 1374288.
  7. [S88] Illinois, Cook County Birth Certificates, 1878-1922, online, : 18 May 2016), George Gannon, 26 Sep 1913; Chicago, Cook, Illinois, United States, reference/certificate 6616, Cook County Clerk, Cook County Courthouse, Chicago; FHL microfilm 1,288,294.