Or maybe I should say "cousin!" I am also related to William Nethery and Rachel Hannum (b. 1798)from Chester County, PA. My g-g-grandfather is their son, Samuel Nethery (b. 1821), married to Elizabeth McCorkle (b. 1826). Their daughter, Sarah Jane Nethery (b. 1858), married James Ferris Hamilton (b. 1856), which are my great-grandparents. My grandmother, Sarah Jane Hamilton, married William Benton Stansbury from Philadelphia, PA.
I have information to share, especially on the Hannum ancestry. Let me know how I can help you.