Zachariah was born in 1802, based on his age (48) in the 1850 Census, which also shows that he was born in Georgia and his children were all born in Mississippi.
Zachariah Dixon (also spelled Dickson) was the son of John Dixon and his wife, Henrietta (Boothe, born after 1775 in Orange Co., NC). His father John was possibly born in Virginia and died in Amite County, Mississippi, in 1849.
Zachariah's will, with the name spelled Dickson, names the children shown in the 1850 Census and includes the information that Rebecca Purvis is Eugene's mother.
Zachariah signed his will on December 3, 1852 and added a codicil on February 11, 1854. He probably passed away that year.
Martha Louisa Dickson, born c1837 (13 in 1850)
William Harrington Dickson, born c1839 (11 in 1850)
Frances Virginia "Fanny" Dickson, born c1841 (9 in 1850), married Alfred Downs "A.D." Aldridge
Reuben Alexander Dickson, born c1843 (7 in 1850)
coincidence worth noting
The 1850 Census for Zachariah's household has a John Johnson, 42, born in North Carolina and includes the notation "Insane". A 15-year-old John Johnson is listed as the son of Jesse Johnson in his pension application ("John is sickly & unable to support himself"). Jesse served in the North Carolina line under Lt. Col. Henry Dixon - possibly this Henry Dixon?
Daughters of the American Revolution, DAR Genealogical Research Databases, database online, (http://www.dar.org/ : accessed March 23, 2017), "Record of Major Henry Dixon", Ancestor # A032542.
↑ Information from research of Tony and Sue Abruscato (see Rootsweb link in Sources), entered July 22, 2012, under a different profile by Liz Shifflett; moved to Zachariah's profile August 7, 2012.
Tony & Sue Abruscato research, posted in Rootsweb.
Dixon-8198 is a replacement profile for Dixon-1851, which was merged away into a profile for a different Zachariah Dixon (see the Dixon-1851 changes page and also the Dixon-1237 changes page for how the information in this profile was developed).
It may be possible to confirm family relationships with Zachariah by comparing test results with other carriers of his Y-chromosome or his mother's mitochondrial DNA.
However, there are no known yDNA or mtDNA test-takers in his direct paternal or maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Zachariah: