1.  Marriage Record:

.  James R. Lytle.  1908.  20th Century History of Delaware County, Ohio, and Representative Citizens.  Biographical Pub. Co., Chicago (online at www.ohiogenealogyexpress.com):

From the entry for their son, Jacob KRONINGER:

John Kroninger was born in Pennsylvania in 1812, and there he learned the trade of blacksmith.  On attaining his majority, he came to Delaware Township, and engaged in the blacksmith business north of the city of Delaware, but subsequently removed to Stratford, where he also carried on blacksmithing.  His later years were spent in farming on the east side of the river, near Stratford, where his death occurred September 24, 1894.  By his first marriage Mr. Kroninger had two sons, Peter and Josea, and not long after his first wife's death he was married (second) to Elizabeth Swartz, by whom he had seven children, six of whom grew to maturity:  James, of Shelby County, Illinois; George, who resides at Shepard; Alvesta, the widow of Milo Graham; James and Daniel who live in Shelby County, Illinois; and Katherine, the wife of Charles Grogan, of Delaware, Ohio.  Mr. Kroninger's third marriage was to Mrs. Hannah Stickney, who was the widow of Hugh Stickney of Union County.  The family were members of St. Marks Lutheran Church of Delaware.

Either the transcriptionist erred or the author erred in duplicating James and omitting Jacob.  Also, Jacob living in Delware Co., OH, not Shelby Co., IL.

From the entry for his son-in-law, Milo GRAHAM:

JOHN KRONINGER, father of Mrs. Graham, was born in Pennsylvania in 1812, and there learned the trade of blacksmith.  On attaining his majority, he came to Delaware Township, and engaged in blacksmithing north of the city of Delaware.  He subsequently removed to Stratford, where he continued that occupation.  His latter years were spent in farming on the east side of the river, near Stratford, where his death occurred September 24, 1894.  By his first marriage Mr. Kroninger had two sons, Peter and Hosea, and not long after his first wife's death he was married secondly to Elizabeth Swartz, by whom he had seven children, the following six of whom grew to maturity: James, a resident of Shelby County, Ohio; George, who resides at Shepard; Alvesta, born May 5, 1853; Jacob; Daniel, who lives in Shelby County, Illinois; and Katherine, the wife of Charles Grojane, of Delaware, Ohio.  Mr. Kroninger contracted a third marriage with Mrs. Hannah Stickney, widow of Hugh Stickney of union County.  The family were members of the Lutheran Church.

There are Shelby Cos. in both OH and IL, so I'll have to track down where the sons are to be certain which is correct.  Delaware Twp., Delaware, and Stratford are all in present-day Delaware Co., OH.