A native of Yarmouth, Wydewell was active by September 1436 when he began a suit for debt in the borough court.
During his first Parliament, Wydewell had to attend to personal matters as well as his parliamentary duties, for he helped to administer the will of his father, who died in early 1451.
A year later, Wydewell and Hugh atte Fenne* appeared in the borough court to sue another burgess for debt.
With this appointment, the first of three consecutive terms as bailiff, Edmund embarked upon the busiest period of his official career, since he also sat in the Parliament of 1463-5 and became controller of customs at Yarmouth a few weeks after the first session of that assembly. Apart from his office of controller, he proved of some service to the Yorkist Crown in other respects. In 1462 he lent Edward IV £16 13s. 4d.
Notwithstanding his service to Edward IV, in December 1470 Wydewell was an attorney in the borough court for John Wenlock*, Lord Wenlock,
During his later years, Wydewell was also busy with private affairs. In this period he pursued suits in the borough court, including a plea upon the Statute of Labourers against William Whytyng, presumably an absconding employee,
Wydewell made his own will on 11 May 1479 and died on the following 29 Sept. Requesting burial next to his father’s tomb in the cemetery of St. Nicholas’s church at Yarmouth, to the high altar of which he left 26s. 8d. He also donated 20s., along with all debts owed to him, to the light of Our Lady there. Among Wydewell’s other religious bequests were the sums of 13s. 4d. that he left to each of the Dominican, Franciscan and Carmelite houses at Great Yarmouth and to that of the Augustinians at nearby Southtown. In return, the friars were to pray for the souls of himself and his benefactors. Wydewell awarded his long-lived mother a life interest in one of his messuages at Yarmouth and an annuity of 40s., and he left his daughter Margaret (yet to find a husband although by then aged about 27) 100 marks towards her marriage. To his wife, Christine, he bequeathed the messuage in which they lived, along with all his household goods, a sum of £40 and a ship called Le John. He awarded the remainder of his goods to his executors, Thomas Duke, Thomas Baynard† and Edmund Jenney†.
