According to the chart at this page:

   http://www.our-ancestors.org/phillips-hoshall/

John Bell is the son of John Bell (b.1718) and Margaret Forrest. He was
born in 1738 in County Stroban, Ireland, and died 1824-Mar-7 in Harford Co.
He served in the Revolutionary War: Captain Harford County, Maryland Militia.

Mary Kerr was born 22 Aug 1746 in Northampton, Penn.