One Theresa/Theresia Welter with 2 husbands is my thought.

1920 Dunleith, Jo Daviess, IL
Joseph J Wiederholt 1870 IL parents Germany
Mary Wiederholt 1868 IL
Charles Wiederholt 1892 IL
Theodore Wiederholt 1895 IL

1880 East Dubuque, Jo Daviess, IL
Charles Witterholt 1830 Germany
Theresa Witterholt 1830 France
Joseph Witterholt 1869
Michael Witterholt 1872
Maggie Witterholt 1875 - was alive in 1900 married whom ?

http://www.ilsos.gov/isavital/marriageSearch.do
WIEDERHOLD, CHARLES & TRANEL, THERESA 1859-11-15 Vol B page 255 JO DAVIESS

Joseph, Michael and Maggie would be half siblings not step siblings to Henry H Tranel 1855-1927 & John Herman Tranel 1858-1930.

Charles and Theresa Wiederhold should have been listed in 1860 & 1870 census with her 2 Tranel children John Herman 1857/1859 and Henry H 1854/1855 then Joseph Wiederholt 1869 with them in 1870 census. By 1880 John Herman and Henry H Tranel were living together in Jo Daviess Co.

Name: Theresa Weiderholt
Event Type: Burial
Event Date: 1905
Event Place: Menominee, Jo Daviess, Illinois, United States of America
Photograph Included: Yes
Death Date: 10 Nov 1905 age 79
Affiliate Record Identifier: 20057471
Cemetery: Nativity of the Blessed Virgin Mary Cemetery
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"Find A Grave Index," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/QVVV-NJMP : accessed 1 January 2015), Theresa Weiderholt, 1905; Burial, Menominee, Jo Daviess, Illinois, United States of America, Nativity of the Blessed Virgin Mary Cemetery; citing record ID 20057471, Find a Grave, http://www.findagrave.com.

Nativity of the Blessed Virgin Mary Cemetery

Henry H Tranel 31 Jul 1856-03 May 1927

Henry H Tranel 14 Feb 1863-02 Apr 1918 wife Magdalena 1870-1959. Magdalena aka Lena Leifker married Feb 1890

Herman Tranel 15 Aug 1860-11 Apr 1930...he was born 1857/1858 not 1860 according to his death record. Photo of the headstone and census records show 1857/1858.

Herman John/John Herman Trannel 1858-1930 wife Ellen 1860-1939..single headstone. "Hermen" Tranel married Ellen Powers 1885. He is listed as Herman Tranel born Aug 1857 wife Ellen Powers says born Jul 1858 IL dtr Alberta A Trannel b. Dubuque Co IA 24 Apr 1895, son James Arthur/Arthur James born Worthingon IA 25 Jul 1899 and lived in Dunleith Township East Dubuque city area, Jo Daviess 1900 going forward.

John Herman Tranel 11 Apr 1811-14 Sept 1889; Euphemia A wife of John H Tranel died 01 Dec 1887 age 61yr 7mos
one stone together.

John Herman Tranel Jr 16 Jul 1856-30 Apr 1889 son of J H and E A Tranel.

Louisa Trannel 17 Sept 1861-17 Feb 1917 wife of Henry Trannel. Henry Tranel married Christena Louise Schmidt 1884.

Herman G Tranel 1854-1944 wife Catharine 1855-1921

Heinrich Tranel died 24 June 1907 age 84

1880 Menominee, Jo Daviess
Henry Tranell/Tranel 1825 Germany
Anna Margaretha KLAAS Tranell 1829 Germany - Anna Margareth died June 1897 age 68 buried Nativity of Blessed Virgin Mary wife of Heinrich
Adlida Tranell 1860
John Tranell SR 07 Dec 1857 - 27 Apr 1940 "Menomince" Jo Daviess father Henry mother Margaret Klass wife Anna "Eifk"
Mary Tranell 1870
Henry Tranell 1863 - Henry H Tranel 14 Feb 1863-2 Apr 1918 father Henry mother Margerath Klaas

(Herman Tranel 13 Nov 1854 Menominee IL-24 Dec 1944 Menominee father Henry mother Margaret Klaas)

John Herman Tranel 11 Apr 1811 Germany-14 Sept 1889
Euphemia A Tranel 1822 Germany
Garrett H Granel 1853 IL
John H Tranel 1857 IL

George H C Tranel died 05 June 1926 in Menominee says born 06 Dec 1850 in Menominee father John Tranel mother Arphemia Horlsbeck.

1880 Jo Daviess Co
(John Herman) Harman Tranel 1858 IL parents Germany
Henry Tranel 1856 IL parents Germany listed as "other"
Caroline Vanderweil 1855 IL listed as "other" servant

https://familysearch.org/ark:/61903/2:2:SYP8-M65
Pedigree file says Henry Tranel's father was Gerhard Herman Tranel and mother Theresia Welter

One Welter family lived in Menominee, Jo Daviess Co 1850
Max Welter 1800 Germany
Clara Welter 1812 Germany
Anna Welter 1834 Germany
Marie Welter 1837 Germany
Rienia Welter 1839 Germany
John Welter 1844 Germany
Julia Welter 1848 IL