In Sisley Jordan Farrar—Ancient Planter, we met Sisley’s husband William Farrar I. William is a descendant of an Angevin (i.e. Plantagenet) King of England—King Edward I of England. [1]

Here is the line from King Edward I of England to William Farrar I:
13. Edward I of England, King of England (1239–1307)
> m. Alianore de Castille
12. Joan of England [of Acre]
> m. Gilbert de Clare, Earl of Glouchester
11. Alianor de Clare
> m. Hugh le Despenser, 2nd Lord Despenser
10. Edward Despenser, Knight
> m. Anne de Ferrers
9. Edward Despenser, 4th Lord le Despenser
> m. Elizabeth de Burghersh
8. Anne Despenser
> m. Hugh Hastings, Knight
7. Edward Hastings, Knight
> m. Muriel de Dinham
6. John Hastings, 9th Lord Hastings
> m. Anne Morley
5. Elizabeth Hastings
> m. Robert Hildyard
4. Katherine Hildyard
> m. William Girlington
3. Isabel Girlington
> m. Christopher Kelke
2. William Kelke
> m. Thomasine Skerne
1. Cecily Kelke
> m. John Farrar
0. William Farrar I (1583–1637)
> m. Sisley NN (Bayley) (Jordan) (Farrar)
Sisley NN (1600–1637) is 11th great-grandmother of MKS in the Knight branch.
William Farrar I (1583–1637) is 11th great-grandfather of MKS in the Knight branch.
King Edward I of England (1239–1307) is 10th great-grandfather of William Farrar I, and 24th great-grandfather of MKS in the Knight branch.
References:
[1] David Faros, Plantagenet Ancestry of Seventeenth-Century Colonists (Baltimore, Maryland: Genealogical Publishing Co., Inc., 1996).