I forgot to add a few a things, one of which definitely suppports your theory.
1. James H. Dossett's full name is James Holland Dossett.
2.I have noted (without a source, so take it for what it's worth) that James Holland Dossett, ELbert Dossett, Drucilla Dossett and Ila Dossett were siblings.
3.According to the 1850 U.S. Census for Hardin County, Illinios, the following people resided with James H. Dossett:
James H. Dossett, age 28 Nancy Dossett, age 40 William Hughs, age 13 Drucilla Dossett, age 12 Ila Dossett, age 10 Ila Dossett, age 6 Elbert Dossett, age 5 George N. Dossett, age 3 Catharin McFadden, age 3 Elbert Dossett, age 20 John W. Hughs, age 19 Mary Hughs, age 15