Missouri Alice German Deal

Looking for parents, siblings of Missouri Alice German Deal. I am not sure if her maiden name was German or Deal.

Missouri Alice married Joseph Corwin and is shown in the 1900 census. However, three DEAL children are listed as step children of Joseph Corwin.

SOURCE: 1900: Liberty, Shelby, Indiana census
Line 85 Family #223 DATE: June 12, 1900

Joseph Corwin age 35 (4/1865) b. IN/ /
Alice Corwin age 27 (12/1872) b. IN/IN/IN (m. 1 year 1 child)
Charles Corwin age 7.12 (10/1899) b. IN/IN/IN
John Deal (s-son) age 12 (2/1888) b. IN/IN/IN
Frank Deal (s-son) age 10 (2/1890) b. IN/IN/IN
Jesse Deal (s-son) age 8 (2/1892) b. IN/IN/IN

It indicates that Missouri Alice had married Mr. Deal at age 14/15 and had three children before marrying Joseph Corwin in about 1899.

Can anyone help with this family?