From "The History of Clinton County, Iowa" published 1879 Chicago: 
  Western Historical Company, pages 765-766, Welton Township
                                            
  JEREMIAH DONAGAN, farmer; P.O. De Witt; was born in County Cork, Ireland, 
  he emigrated to Maine in 1836; from Maine 
  he removed to  Boston; thence  to Rhode  Island; then  to Connecticut;  
  thence to Chicago and on to California in 1849, where he remained until 
  1852; he then returned to Ireland, but came back to the United States in 
  March, 1853; he came to Clinton county in the fall of the same year and 
  purchased the farm where he now lives. His wife was Mary Lucey, born in 
  England in  1835;  they  have  8  children;  John,  Michael, Jeremiah,  
  Patrick, Mary C., Dennis, Maurice and James; lost one son Edward age 5  
  years.
  
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                             Jeremiah Donegan
  Died September 29, 1895
  
  Will and Jerry Shannon drove to Welton Tuesday afternoon to attend the 
  funeral of their uncle, Jeremiah Donegan, today at DeWitt. Mr. Donegan  
  was one of the oldest settlers of the county and had reached the age of 
  80 years.  He leaves a wife and seven children.
  
  Clinton Morning Age
  Wednesday, October, 12, 1895
  
  Tombstone says 82  years old.

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  Biographical Sketches of the earliest settlers in Clinton County, Iowa
  
  Early immigrants in Ireland seemed prone to try several locations before 
  stopping in Clinton county.
  
  Jeremiah Donegan was born in County Cork, Ireland, emigrated to Maine,  
  then removed  himself  to  Boston, thence  to  Rhode  Island,  then to  
  Connecticut. next move was to Chicago, then to California. After a trip 
  back to Ireland he came to Welton township where he bought a farm.
  
  De Witt Observer
  September 8, 1982
  
  
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                          Mrs. Jeremiah Donegan
  
  Mrs. Jeremiah (Lucey) Donegan died at her home at Davenport the 6th of  
  March of cancer of the stomach, aged 65 years. the remains were brought 
  to the old home and taken to De  Witt for burial, Mrs. Donegan was an 
  old and respected  resident of this  township. She leaves  a family of  
  seven children; Michael and  John of Eagle  Grove, Patrick, Dennis and  
  James of Davenport,  Jerry and Mrs. (Mary C.) Showalter  of Welton to  
  mourn her loss.
  
  Clinton Tri Weekly Herald
  March 10, 1900
  
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  Mary Lucey, wife of  Jeremiah Donegan was born  September 24, 1835 and  
  died March 6, 1900.  
  
  They had nine children; John, Michael, Jeremiah Jr., Patrick, Mary C.,  
  Dennis, Morris, James  and a  son Edward  born July  4, 1872  and died  
  February 4, 1876.
  
  
  
  Jeremiah Jr.'s wife Maggie died July 30, 1886 at age 25 years, 4 months, 
  15 days.  Born March 15, 1861.
  
  All are buried at St. Josephs cemetery, DeWitt