Daughter Tobitha [should be Tabitha][Ann] b. abt 1848 married Josiah Wortman Jan 26, 1868 in Shelby County, Illinois.
Son George b. abt 1853 might be the single George Mize in the 1900 Census living in Ozark, ARk as a boarder and working as a laborer.
Haven't been able to trace the other children but Landa is probably Linda and Catharin might be Cathrine or Kathrine.
1880 United States Federal Census
Name: Josiah Wortman
Home in 1880: Dry Point, Shelby, Illinois
Age: 36
Estimated Birth Year: abt 1844
Birthplace: Illinois
Relation to Head of Household: Self (Head)
Spouse's Name: Tobitha A. [Ann]
Father's birthplace: Kentucky
Mother's birthplace: Kentucky
Occupation: Farmer
Marital Status: Married
Race: White
Gender: Male
Household Members: Name Age
Josiah Wortman 36 m/w Farmer b. ILL parents b. KY
Tobitha A. Wortman 33 f/w wife b. Ind Keeping house
Isaac F. Wortman 11 m/w son at school b. Ill
Elizabeth E. Wortman 8 f/w daughter at school b. Ill
George E. Wortman 6 m/w son at school b. Ill
Emily A. Wortman 2 f/w daughter at home b. Ill
They live in house #249. In house #247 lives:
Name: William F. Wortman
Home in 1880: Dry Point, Shelby, Illinois
Age: 48
Estimated Birth Year: abt 1832
Birthplace: Illinois
Relation to Head of Household: Self (Head)
Spouse's Name: Margaret
Father's birthplace: Kentucky
Mother's birthplace: Kentucky
Occupation: Farmer
Marital Status: Married
Race: White
Gender: Male
Household Members: Name Age
William F. Wortman 48 m/w Farmer b. Ill parents b. KY
Margaret Wortman 44 f/w wife Keeping House b. Ill Father b. VA Mother b. MD
Hattie Wortman 21 f/w daughter at home b. Ill
Emma Wortman 20 f/w daughter at home b. Ill
Ann Wortman 18 f/w daughter at home b. Ill
Thomas B. Wortman 15 m/w son works on farm b. Ill
James N. Wortman 12 m/w son works on farm b. Ill
Mattie Wortman 8 f/w daughter works on farm b. Ill
George Howard 22 m/w Laborer Farm Laborer b. Ill [no apparent relationship to family]
There is also a John I. Wortman, 27, living in Holland, Shelby County, Illinois with his wife, Ann age 21, son William F. age 2 and son Harvy age 10 months. They are, more than likely, related to the other Wortmans.
William F. Wortman and his wife Margaret are still living there in 1900 but I do not see them in 1910. In 1930, William F. Wortman b. 1893 is still living in Cold Spring, Shelby Co, Ill with wife Florence D. and daughter Lois L age 8. No other Wortmans shown on same page.
Josiah Wortman
Born: 4 May 1842
Died: 5 Feb 1911
Marriage: 24 Mar 1864 in Shelbyville, Illinois [Jan 26, 1868 in Shelby County, Illinois]
Tabitha Ann Mize
Born: 24 Apr 1848
Died: 5 Oct 1882
Children
Isaac Franklin WORTMAN b: 2 JAN 1869 in Clarksburg, Illinois
Elizabeth Eleanor WORTMAN b: 21 SEP 1871 in Shelby Co. , Illinois
George Elmer WORTMAN b: 28 OCT 1871 in Shelby Co. , Illinois
Antonio WORTMAN b: 13 AUG 1877 in Shelby Co. , Illinois
Anerni Grace WORTMAN b: 31 OCT 1880 in Shelby Co. , Illinois
Joseph Lee WORTMAN b: 29 MAR 1884 in Shelby Co. , Illinois
Elsie WORTMAN b: 20 JUL 1885 in Shelby Co. , Illinois
Name: Tabitha Ann MIZE
Sex: F
Birth: 20 FEB 1848 in Crawford Co., Indiana
Death: 22 SEP 1886 in MT. Carmel Cemetery [Shelby County, Illinois]
I'm not sure about the genealogy - you can see the differences in dates for yourself. Unfortunately the information has not gotten us any closer to military service.