I don't know if this helps at all, but the son Daniel P Young has a birth recorded in Barren, KY listing his parents as William J Young and Louise R. Heddespath. Mollie is a common nickname for Mary and Bett could be short for Elizabeth?
In 1900 Mary Elizabeth Grant is living with husband Lewis Grant - married 6 yrs. His stepchildren inlcude Jno. E Bale - who is your grandfather??? and Woodson and Ethel Bale - other children of Mollie Young and W. W. Bale.
Kentucky, Births and Christenings, 1839-1960
Citing this Record "Kentucky, Births and Christenings, 1839-1960," index, FamilySearch (https://familysearch.org/pal:/MM9.1.1/FWN1-C5D
Daniel P. Young Male
Birth 29 Mar 1855 Barren, Kentucky
Father William J. Young Mother Louisa R. Heddspeth
U S Census, 1880 Precinct 2, Hunt, Texas
Citing this Record "United States Census, 1880," index and images, FamilySearch (https://familysearch.org/pal:/MM9.1.1/MFNL-569
Self W. J. Young M 48 KY
Wife Louisa R. Young F 45 KY
Son Coleman Young M 21 KY
Son John G. Young M 16 KY
Son James H. Young M 12 KY
Son Robbert L. Young M 7 KY
Son Samuel R. Young M 3 KY
U S Census, 1870 Precinct 3 Hart, KY
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W J Young M 37y KY carpenter
Louisa Young F 34y KY
Daniel P Young M 15y KY
Coleman D Young M 12y KY
Mary E Young F 10y KY
John G Young M 6y KY
James H Young M 3y KY
U S Census, 1900 ED 127 Justice Precinct 3 (all north of Cotton Belt rd.), Hunt, TX
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Head Lewis H Grant M 41 IL married 6 yrs
Wife Mary E Grant F 39 June 1861 KY 10 children 6 living
Dau Lillie M Grant F 5 TX
Son Porter Grant M 3 TX
Son Lewis J Grant M 1 TX
Stepson Jno E Bale M 17 Oct 18?99 TX
Stepson Woodson Bale M 10 Feb 1890 TX
Stepdau Ethel Bale F 8 May 1892 TX
The following page has many records of the children of Mollie and William Woodson Bale. Maybe by using the free search tool and looking for the children individually you will find more. There are death records for Charles, John, Ethel (Brown), WW Draft for Harris S. etc.
https://familysearch.org/search/record/results#count=20&query=%2Bgivenname%3Amollie~%20%2Bsurname%3Ayoung~%20%2Bbirth_place%3Aky~%20%2Bbirth_year%3A1860-1870~%20%2Bresidence_place%3Atx~%20%2Bresidence_year%3A1880-1940~%20%2Bspouse_givenname%3A%22woodson%20w%22~%20%2Bspouse_surname%3Abale~