There are graves for Wilhelm and Ernestina Jahr in the United reform Cemetery in Hankinson, North Dakota. Wilhelm's tombstone reads: Wilhelm Jahr (vater) 1 mai 1836-8 Juli 1902. Ernestina's tombstone reads: Ernestina Jahr (mutter) 14 Juni 1838-1 Sept. 1914. Some of their children are
wilhelmine Justine Jahr, born 26 Dec, 1856 in Vandsburg, Westpreussen, Preussen (Ggermany) This is my great grandmother. Another child is Carl Friedrich Jahr, born 28 Sep, 1858 also in Vandsburg. Could this be your Fred? Look forwrd to hearing from you.