1st Wife: Phoebe Ingals
Married: March 18, 1852

John & Phoebe Dunkin had the following known children:

Casandra, John Henry, William T, Benjamin S., Mary Ellen, Hugh Cowan, and Jemima "Jamie" Dunkin

2nd Wife: Jennie Evelynia Long
Married: About 1872

Per the June 9th/10th, 1880, Douglas, Nemaha Co., NE Census the following people were listed:

Head: J.W. Dunkin: 50 Yrs, b: Abt 1830, IN
Wife: Jessie Dunkin: 32 Yrs, b: Abt 1848, TN
Son: Hugh Dunkin: 14 Yrs, b: Abt 1866, KS
Son: C.W. Dunkin: 4 Yrs, b: Abt 1876, IA
Son: G.M. Dunkin: 3 Yrs, b: Abt 1877, NE
Son: J. M. Dunkin: 2 Yrs, b: Abt 1878, NE
Step-Son: Arthur Lake: 7 Yrs, Abt 1873, IA, Son of Jessie Dunkin

John & Jennie Dunkin Had 6 Children:

On the June 19, 1885 Douglas, Nemaha Co., Nebraska State Census the following people are listed:

Head: John Dunkin: 56 Yrs: b: Abt 1829, IN, Farmer
Wife: Jennie Dunkin: 40 Yrs, b: Abt 1845, TN, Keeping House
Son: Arthur Dunkin: 11 Yrs, b: Abt 1874, IA
Son: George Dunkin: 7 Yrs, b: Abt 1878, NE
Son: James Dunkin: 6 Yrs, b: Abt 1879, NE
Son: Frank Dunkin: 4 Yrs, b: Abt 1881, NE
Son: Jessie Dunkin: 2 Yrs, b: Abt 1883, NE
Son: Albert Dunkin: 4 Months, b: Feb. 1885, NE

On the June 22, 1900 Auburn, Nemaha Co., Nebraska Census, the following people are listed:
Name spelled "Duncan" as opposed to "Dunkin"....

Head: John Duncan: 70 Yrs., b: Sept. 1829, IN
Wife: Jennie Duncan: 55 Yrs, b: May 1945, TN
Son: Arthur D. Duncan: 26 Yrs, b: Nov. 1875, IA
Son: George Duncan: 21 Yrs, b: Oct. 1878, NE
Son: James Duncan: 20 Yrs, b: Dec. 1879, NE
Son: Frank Duncan: 19 Yrs., b: March 1880, NE
Daughter: Jessie Duncan: 17 Yrs, b: Nov. 1872, NE
Step-Son: Arthur D. Shrake: 24 Yrs, b: Nov. 1875, NE, Son of Jennie

Charles Wesley, George Morton, James Madison, Francis "Frank" Garfield, Jessie Eveline, Lemuel Emery, and Ludwell.