Recently, DNA testing has connected the family line of John Barry (resided County Limerick, Ireland, about 1790-1850), with the line of John Berry and Mary Grimes (resided Clark Co KY, 1809-1820), and Madison County, KY., Berry families.
The Madison County KY lines are: *John Berry and Elizabeth Harris (resided Madison 1795 to 1808), *the line of Garrett Berry and Mary [?] (resided Madison 1789 to 1830),
Based on conventional genealogical research, my theory is that other Madison County Berry lines are related to those mentioned above. The other lines include: *James Berry and Sarah Grubbs (resided Madison 1790 to present), *the line of James Berry and Margaret [?] (resided Madison 1790-1840), *and perhaps William Berry and Rhody Crews/Moman (resided Madison 1800-1840).
Additional Barry/Berry DNA tests might help confirm my theory.