I am searching for the same needle.Ann Beckwith is my 5th great grandmother.What I have from unverified sources is:
Ann Beckwith born about 1764 in Frederick County, Maryland.Died 1828 in Bath County, Virginia.Father an unknown Beckwith, mother Kezia unknown. About 1784 she married Thomas Swearingen Williams in Mongomery County, Maryland.Thomas was born 1764 in Frederick County, Maryland and died 1814 in Bath County, Virginia.They had at least one child:
Mary Williams born 2 May 1788, died 11 August 1840 in Delaware County, Indiana. On 19 September 1804 she married Jesse Jackson in Warm Springs, Bath County, Virginia.