You may want to try looking at Somerset County, Maryland records. My BRATTON, John BRATTON was b. abt 1675 Ulster, Ire. and d. 1718 in Somerset County, MD. Parts of Somerset are now in Worcester Co., MD, so you will want to check there, too.
John BRATTON married Elizabeth NELSON bef 1700 either in Ire. or MD. She was b. abt 1721 and d. abt 1721 Somerset Co., MD. She was the daughter of William NELSON.
There is a general opinion (not proven) that John BRATTON and perhaps some of his brothers and/or cousins arrive in America about 1711. Since some of his children were born before this time, this indicates he and Elizabeth were married in Ire.
Children: Hannah BRATTON, b. abt 1746 Worcest Co.,MD (my ancestor) and brothers Samuel died 1759, John, James, and William BRATTON, b. abt 1700 and d.28 Oct 1748 Somerset Co., MD.
This information comes from "The DALES of Eastern Shore Maryland and Tennessee" compiled by Clarice Neal.