Eleanor was re-united with her Mother and in 1330 negotiations were made by her Mother that she and her Brother John of Eltham, Earl of Cornwall to marry a son and daughter of Philip VI of France, however they fell through also.
In May 1332 Eleanor married the reigning Count of Guelders, Reinoud II "the black" (English: Reginald), of the House of Wassenberg (born c. 1287), a marriage arranged by her mother's cousin Jeanne of Valois. The Groom, being quite dark of colour and character, was a widower with four daughters. He was known for having imprisoned his father for over six years.
As she sailed from Sandwich, her wedding trousseau included a wedding gown of Spanish cloth, caps, gloves, shoes, a bed, rare spices and loaves of sugar. She was well received in Guelders and bore her husband two sons Reinoud III "the fat" (1334-1371) and Edward of Guelders (1336-1371. However, due to her unhappy childhood, she grew nervous and eager to please her husband, who tired of her and sent her from court (1338) by pretending she had leprosy. Her husband then tried to annul the marriage.
Eleanor turned up in Court in Nijmegen though to contest the annulment, and proceeded to strip down, proving she was no leper, and thus forcing her husband to take her back. He died from a fall from his horse on 12 October1343.
On 22 April1355, twelve years after she became a widow, Eleanor died in poverty in a Cisterian convent aged 36, she helped rule with her son Reginald who quarrelled with her for trying to make peace with her younger son and confiscated all her lands. She was too proud to ask her Brother Edward III of England for help and was buried in Deventer Abbey. Her tomb stone had the simple inscription ELEANOR on it, however in England on the south side of Queen Philippa of Hainault's tomb in Westminster Abbey there is an image of her and her husband.
