Beth, Thanks again. Since my Grandma gave birth to my Uncle when she was 50, I have to agree that Clinton and Marcellus could possibly have been children of Solomon & Elizabeth Dobkins. Knowing that Solomon Dobkins outlived Elizabeth and he died 1852 in Kaufman Co., TX., there may be a way to answer that question. If Solomon died "intestate", all living children should have been named in his Probate records (in Kaufman Co.). Marcellus was listed on the 1860 Census of Claiborne Co., TN. as a Clerk-age:24, so we know that he was alive when Solomon died in 1852. The Kaufman Co. Probate Court would have had to track him down (if he was a son) to settle the Solomon Dobkins Estate. Since I'm not directly related to the DOBKINS families, I'll let someone else see if they can track down that answer.
I don't know if it's any help, but I ran across an Evan D. Dobkins while I was trying to track Alexander and Hugh's migrations through Missouri. Evan D. got a land grant in St. Francois Co., MO. on 9/1/1859. Since he had to be 21 to apply for land, and the Patent process typically took 2 years, I would guess that he must have been born before about 1836. There were also land grants issued to James (b.1813-TN)and John (b.1811-TN) Dobkins in nearby Crawford Co., MO. in 1856 and 1859. So I'm guessing that Evan D. Dobkins might have been related to the Crawford Co., MO. DOBKINS clan. I'm sorry if that information is more confusing than helpful, but that was the only "Evan Dobkins" I've seen.
From tracking some of the DOBKINS families in and out of Missouri, and many to Texas, it seems that many of them had Confederate sympathies during the Civil War. The Border area activities with Kansas in the 1850's may have urged many of them to move south. During the War when General Order # 11 was issued, Confederates were evicted and their buildings burned. Most went to Texas until after the War, with some then returning to their land and some not. This is just a rough generalization, but seems to fit the common pattern of migrations for Confederates in the northern and eastern parts of Missouri.