Information from Cynthia Glover (nee Coleman), whose great-great-grandfather was William Samuel Allen b.1843. (William's sister, Martha Allen, married Charles Oliver, youngest son of James and Ruth Oliver).

Knighthood from, "The History of the Stanhope Family" by Michael Stanhope, 2007. Website as at July 2014:
http://stanhopefamilyhistory.webs.com

Michael writes Sir John and Elizabeth had six children:
1. Margaret Stanhope
2. John Stanhope
3. Richard Stanhope
4. Stephen Stanhope
5. Robert Stanhope
6. Ralph Stanhope