Eleanor was the great-granddaughter of Henry III and Richard Fitzalan was a wealthy and important noble during the reign of Edward III, their marriage on the 5th February in 1344 was a love match I believe. With Fitzalan, she gave birth to seven children, the second, John, was my 19th great grandfather.
Richard, Eleanor's eldest child and heir to the earldom of Arundel, claim to fame, apart from carrying the crown of England at the coronation of Richard II, was his membership of the Lords Appellant, a group of men who disagreed with Richard's rule and his reliance on favorites - Fitzalan would lose his head over it.
Thankfully, Eleanor was long gone by that time as was Richard.
The proof of the love between Eleanor and her husband defies time and lies in the request Richard Fitzalan made in his will -
"near to the tomb of Eleanor de Lancaster, my wife; and I desire that my tomb be no higher than hers, that no men at arms, horses, hearse, or other pomp, be used at my funeral, but only five torches as was about the corpse of my wife, be allowed."
Eleanor was the great-granddaughter of Henry III and my 20th great grandmother