The Darells traced their descent back to Normandy, the family taking its name from the village of Airel near Saint-Lô, and were seemingly established in Yorkshire by the middle of the twelfth century. They may have acquired their seat at Sessay near Thirsk by the close of that century, and were certainly there by the 1230s. Sir Edmund’s grandfather, William Darell, left a number of sons, two of whom headed south and forged careers which quickly outshone that of their elder brother, Marmaduke. William Darell settled at Littlecote in Wiltshire, while his brother John Darell founded a family at Calehill in Kent, and both rose to sit in Parliament and hold various offices, not only in their new localities but also within the royal court and administration.
Edmund was probably of age at his father’s death, as no evidence survives in respect of his minority. His mother’s survival significantly diminished his income: in September 1423 his father’s feoffees settled upon her a life annuity of 50 marks.
Edmund first appears in the records in an active role in August 1424 when he bound himself to abide arbitration in a dispute with the master and brethren of St. Leonard’s hospital in York. In January 1427 he was named as the supervisor of the will of another neighbour, Marmaduke Thweng, and in 1430 he was distrained along with his uncle John for not taking up the honour of knighthood.
As a knight, Darell now had a new importance in his native shire, and in a county where belted knights had a monopoly over representation he was now qualified to represent it in Parliament. He was duly returned to the Parliament of 1433, along with Sir Robert Hopton*, who like him was to represent the county only once.
Darell probably died soon after making his will, since on 12 Nov. 1436 his widow appointed attorneys to receive seisin of various lands from her late husband’s feoffees in accordance with the enfeoffments. At the same time, these attorneys were also to take seisin of the properties in Yorkshire and Lincolnshire which had descended to her following the death of her own parents, her father having died a few months earlier, in June.
