I don't think there is a Callins Co, in TX.There is a Collin Co, TX.New Harp is in Montague Co, TX.
Do you know when and where J.D. died?If so, you can obtain a copy of his death certificate, which should show the names and birth locations of his parents.Armed with the name of his father, you can find the family on the 1880 census, and follow them through to 1920.
Female children probably married, you don't show married surnames, and some of the sons names were too common to make a match, but did find the following one:
Kermit D. Hester b 1-1-1909 in OK, mother's maiden name Barker; d 2-5-1991 in Humboldt Co, CA, 82 yrs, and SS card issued in CA.
If informant was correct on the DC, looks like you may need to do some researching in OK, too.