Thank you very much for the information. It confirms what I already have for this family group, and that makes me happy. I was hoping for a little more information on Gideon Tilghman, but I guess if there was more you would have included it.
I would like to clarify something, however, because I think it's rather important for anyone researching this line.
Ruth Devonshire, the wife of Christopher Tilghman. Her family name was Blount. She was called 'Devonshire' because she was the illegitimate daughter of Charles Blount, 1st Earl of Devonshire, and Penelope Devereaux, Lady Rich.
Although Charles Blount and Penelope Devereaux did eventually marry in 1605, their children were never legitimated, meaning that Charles Blount had no legitimate heirs when he died in 1606 and his earldom became extinct.
Their other children were: Mountjoy Blount (Devonshire), Elizabeth Blount (Devonshire), and John Blount (Devonshire).
Charles Blount was a descendant of Thomas Grey, 1st Marquess of Dorset (son of Elizabeth Woodville, Queen to Edward IV, by her first marriage), and also to Richard Neville, 5th Earl of Salisbury (son of Joan Beaufort, who was the daughter of John of Gaunt and Katherine Swynford. She married Ralph Neville, 1st Earl of Westmorland).
Incidentally, Anna (Pandreth) Saunders' ancestry can also be traced through Edward Neville, a younger son of Joan Beaufort and Ralph Neville. She is also a descendant of Isabel le Despencer, daughter of Thomas, 1st Earl of Gloucester, and Constance Plantagenet (daughter of Edmund, Duke of York and Isabella of Castile. Edmund was a younger son of Edward III and Philippa of Hainault).
The eldest son of Charles Blount and Penelope Devereaux, Mountjoy, did use the name Blount, and I assume that the other children also used the family name in practice.
Mountjoy Blount became the 1st Earl of Newport in 1628. This earldom also became extinct with the death of the 4th Earl of Newport in 1679.
All this makes me wonder if the Tilghman family are more well-connected than it appears. At the very least, they were landed gentry. For Christopher Tilghman to make such a marriage, he would either have had to be wealthy or well-connected. Otherwise, he probably wouldn't have been able to contract a marriage to the daughter of an Earl, illegitimate or not.
If you have any other information that you think would be useful, please let me know.