Charles "Charliei" Leonard Hacker s/o Martin V. and Mary A. Hacker Indiana

I am looking for information on the Martin V. Hacker family, particularly Martin's son, Charles "Charlie" Leonard Hacker b. ca 1890 in Guthrey, Indiana who married Ivy Hamilton.They had two children of which I know of before they divorced between 1920-1930--- C. Theodore b. 1901 and Jean M. b. 1912.In 1920 Charlie and Ivy were still married but by 1930, she was living in Fountain Co., IN with her widowed father with the two childen and Charlie was living with his parents in Madison, Clinton Co., IN

I believe Charlie remarried to a woman named Pearl Miller, but after the 1930 census Ivy and the two children are unheard of at this point.
Ivy was the daughter of Hugh "Hal" Audley and Mary A. Watkins Hamilton--Mary A. Watkins was the daughter of John and Twilley Timmons Watkins.

Any information???

Thanking you in advance,

Carol