Not sure if we've covered this ground before, but it's highly possible my grandfather and your SE Texas ancestor may have crossed paths. My g-grandfather, Jesse Knighten DuBose settled in the Marshal area (Harrison Co) along with his mother, several brothers and a sister in the mid-1840s. The family, which had roots dating back to the 1680s in South Carolina, had migrated via West Florida and SE Alabama to Texas and were shown on an 1846 Republic of Texas "Poll." In 1850 he married Elizabeth Wheeler, also of Alabama, in Harrison County. There are recorded 5 children of that marriage, the youngest boy [also Jesse [III] Knighten DuBose, 1863-1920,] was my grandfather.
By the mid-1850s he, Jesse II, and several other family members were settle along the upper Sabine River in southern Hunt County...about 25-30 miles SE of Greenville. Jesse (the second of that name) served with Bourland's Regt, came back and was killed...supposedly from ambush...in 1866. Since he and a brother had been charged with murder in the early 1860s...family legend had it to do with revenge by surviving family members of victims of the lynchings of Union sympathizers that went on before the WBTS...more recent information has it as the husband of one of his nieces whom he allegedly "horse whipped" on the streets of Greenville for "mistreating his niece"...was the killer.
His son, Jesse (III) and mother were in Marshal in the 1880s. Jesse (III) later owned and operated a shipyard on the Sabine River around Logansport, LA--homesteaded property in the area of Caddo Lake--and by the end of the 19th century had worked his way south on a houseboat, with his growing family, working in sawmills along either side of the Sabine. The next solid record I have of him is in Deweyville, Texas in 1904 where my father (Joseph Powell DuBose, 1904-1975) was born.
By WWI he was working in a shipyard in Orange. According to my father, the yard was building wooden hull mine sweepers for the Royal Navy. He continued on in the ship yard and was killed in an accident in January, 1920. The six children who survived to adulthood (3 girls, 3 boys) all settled in the Port Arthur area, in the 1920s-30s (although several were later to move on to other parts of East Texas). The boys worked at one or another of the refineries, as did their brother-in-laws.
Since Jesse (III) worked in both the boat building industry as well as sawmilling in SE. Texas, I suspect their paths crossed...maybe more than once. What's the old saying about "three degrees of separation?"