John Brooks Threlfall, Ancestry of Thomas Bradbury and his wife Mary Perkins, (Madison, Wisconsin, 1988). The Bradbury memorial: records of some of the descendants of Thomas Bradbury-44. Included are 8 children of Jabez and Sarah
It may be possible to confirm family relationships with Abigail by comparing test results with other carriers of her ancestors' mitochondrial DNA.
However, there are no known mtDNA test-takers in her direct maternal line.
It is likely that these autosomal DNA test-takers will share DNA with Abigail: