Tankfull or Thankfull appears in my records on the Eacotts . I think she was from PA (whitehall twp). You can check this out in the master index posted along with my website www.eacott.info
I think you will find her under Tankfell R. Hannah
Children Kate, Wm, John Henry Jr and Lily. John Henery Sr was born 1840 Whitehall Twp PA.

The file is downloadable into Family Tree Maker