Post by djoser-xyyman on Nov 23, 2015 15:46:49 GMT -5
Origins of an Unmarked Georgia Cemetery Using Ancient DNA Analysis - Andrew T. Ozga Nov2015
Abstract
Determining the origins of those buried within undocumented cemeteries is of incredible importance to historical archaeologists and in many cases, the nearby communities. In the case of Avondale Burial Place, a cemetery in Bibb County, Georgia, in use from 1820 to 1950, all written documentation of those interred within it has been lost. Osteological and archaeological evidence alone could not describe, with confidence, the ancestral origins of the 101 individuals buried there. In the present study, we utilize ancient DNA extraction methods to investigate the origins of Avondale Burial Place through the use of well-preserved skeletal fragments from 20 individuals buried in the cemetery. Through examination of hypervariable region I in the mitochondrial genome (HVR1, mtDNA), we determine haplotypes for all 20 of these individuals. A total of 18 of the 20 individuals belong to the L or U haplogroups, suggesting that Avondale Burial Place was most likely used primarily as a resting place for African Americans. After the surrounding Bibb County community expressed interest in investigating potential ancestral relationships to those within the cemetery, a total of eight potential descendants provided saliva in order to obtain mtDNA HVR1 information. This phase of the study revealed that two different individuals from Avondale Burial Place matched two individuals with oral history ties to the cemetery. Using the online tool EMPOP, we calculated the likelihood of these exact matches occurring by chance alone (<1%). The present findings exhibit the importance of genetic analysis of cemetery origins when archaeological and
Archaeological evidence suggests Avondale Burial Place was used by African Americans between the 1820 and 1950 with the greatest component of the assemblage likely deposited after the Civil War (Matternes et al. 2012). A concentration of graves was present in the central portion of the complex with later period graves radiating outward. These simple, undecorated coffins with few to any accouterments suggested the Avondale Burial Place had its beginnings as a slave cemetery (Matternes et al. 2012). The graves were all oriented east-west, a common practice of both European-Christian and African-influenced burials. In the case of European-Christians, burials are usually positioned in an east-west alignment with the head facing west in order to allow the dead to face Jesus on his arrival; it is also symbolically attached to rebirth (Milbauer 1989). EARLY African burials in the U.S. are oriented in the same east-west direction but were intended to synchronize the dead with the structure of the universe (Genovese 1972; Pollitzer 1999). Other features, including vaulted graves and the use of hexagonal coffins are shared among other African American cemeteries within the Southern United States (Matternes et al. 2012).