Query: JACKSON/MOTT/ALYEA of Porter County

Looking for information on Peter Nelson JACKSON b: 1845 Syracus, Onondaga, N.Y. This is what I have found so far.
  1850 Fed Census at Boon, Porter, Ind.
  1860 Census Porter, Ind.
  1864 Valparaiso, Ind. enlisted in Co E 128th Inf Reg
  1866 mustered out at Valparaiso, Porter, Ind.
  16 Sept 1866 Married Mary MOTT (Porter County, IN)(I have marriage record)
  1866 During this time a daughter named Irene JACKSON was born.
  Sometime after the birth and before 1870 Mary Mott JACKSON died.  Supposedly Amanda Almira Alyea took care of Irene for Peter Nelson Jackson. Amanda Alyea became Nelson Jackson's second wife (legal?) before 1870. Hope to find a marriage record. Sometime in 1871 Oliver Jackson was born.

I could not find
    1870 census for Nelson Jackson.
    1880 I believe the Jackson's were in Adair County Iowa.
    From 1880-1890 on, the Jackson's resided at Winterset, Iowa.

I’m looking for documentation for:

  Birth for Mary Mott

  Birth Amanda Almira Alyea b. 1856 Porter County (?)

  Marriage record Jackson-Alyea (unknown location)
  Death record for Mary Mott Jackson
  Birth record for Irene (Mary Mott) Jackson
Perhaps there might be other information pertaining to the Jackson's. Any information that can be found will be appreciated.
Respectfully Yours;
Rollyn Kidd

210 13th st se
Auburn, WA 98002-6643
mrskip59@comcast.net

Editor's Note: Porter County, Indiana records have been thoroughly check. This is being posted hoping that some one out there might know this family and have more information.