My husband and you are probably cousins - he is directly descended from Thomas James and Clementina through their only child, Clara James who married Origen Sibley Jewett.
I saw your posting and thought I would update your information a little:
Thomas died in 1834 not long after Clara's birth in 1832; Clementina never married again and Clara was the only child they had.
The other children you have listed are Clara's children with O.S. Jewett -
Thomas James Jewett born 10 Oct 1854 Virignia Scott Jewett born 27 Nov 1856 Clara Lee (Gipsy) Jewett born 10 Sep 1859 Origen Sibley Jewett Jr. born 3 Oct 1860 Eliza Elliot Jewett born 20 Nov 1862
My husband's paternal grandmother, Florence Marks, was the daughter of Clara Lee (Gipsy) Jewett who married Samuel B. Marks; she got the info on the family, especially the siblings, from her mother and wrote it up for the family many years ago.
Thomas died according to the info she left on 31 Aug 1834 in Lowndes County AL.