Judy, I do not know much about this family, but here's what I have found:
James E. Lambright married Mary Ann Mell Aug 9, 1843, Chatham county
James F. Lambright d. Aug 4, 1899 age 76 yrs, buried in Oak Grove Cem, Brunswick, Glynn co Mary Nell Lambright d. June 19, 1914 age 88 yrs,
also two Lambright infants Reta May Ward infant Anna Lambright Gatchell Ferdinand Gatchell Edward Cody all are buried in James E Lambright plot.
a few plots over is Joseph Lambright d. June 21, 1886 age 37 Julia D. Lambright Feb 8, 1924 age 73
It looks like they are in the 1850 census for Chatham county
1860 census, GA, GLynn co, Brunswick James E. age 38 wf Mary A. 30 son James T. 15 son Joseph E. 11 dau martha A. 7 dau Laura T. 5 dau Anna M. 2
1870, GA, Glynn, Brunswick James E. Lambright age 47 wf Mary 44 dau Laura 14 dau martha 17 son Joseph 21 dau Omah 12 dau Louisa 10 dau Julia 7 dau Rosa 4
James T. 26 wf Ruth S. 22
1880, GA, Glynn, Brunswick James Lambright 57 GA, SC, SC wf Mary A. 54 dau Annie M. 21 dau Mary L. 19 dau Gussie M. 17 dau Ida R. 14
Joseph Lambright 31 wf Julia 28 son Edwin 6
James Lambright 35 wf Rosa 32 dau Mary 7 son William 5 son Thomas 2
Taylor Ferguson 29 SC, SC, SC wf Martha A. 26
1900, GA, Glynn, Brunswick City: Taylor b. 7/1847 SC (52) m 20yrs, wf Martha b. 9/1953 (46), dau Mary A b 9/1881 (18), Edith M. b.8/1883 (16), Edna A. b.8/1883 (16), Sarah B. b. 7/1885 (14), Martha L b.7/1889 (10), son John B. b. 9/1896 (8)
It looks to me that Mary Ann Mell who married James E. Lambright was probably the daughter of Thomas Mell and Mary Ann Bunkley.
I do not know yet who Mary's father was, but I believe her to be the daughter of John Bunkley and Mary Ann White, they were married in Liberty count in 1789.
I do not know where the Mary Dubose comes in.I think that there was a Mary Ann Mell who married a Joel Dubose, but she died in 1833.Not for sure on this.
It looks like Thomas Mell married Mary Boswood1718 I think Thomas and Mary had a son William William married an Ann ? they had a son Thomas Mell b. 1761 he married Sallie Sumner Bacon (possibly a widow)