Some thirty miles away on the banks of the Susquehanna River at Marietta was the home of Lazarus Lowry who was a well known Indian trader. Lazarus Lowry had come from Ireland and settled in Donegal, PA in 1729 on a farm, two miles from Marietta.

Lazarus was the father of eight sons and one daughter, Martha Lowry who would later marry John McConaughy. He and his sons traded with Indian tribes as far west as the Mississippi. His son Alexander Lowry became famous for his exploits and escapes from hostile Indian tribes. Martha Lowry was born in 1737 in  Lancaster County, PA.

John McConaughy and Martha Lowry marry and have a son David (1775) and daughter Sarah (1765.)