Edward was the illegitimate son of Sir John Bertram, one of the leading figures in the north-east and a long-serving representative of both the Crown and the bishop of Durham. When witness at proofs of age in 1444 and 1446, he gave his age as 52, but his father was too young to have had a child in the early 1390s, and it is probable that he was born some ten years later.
In the early 1430s Bertram was intensively active in the administrative affairs of both the county and the town. In February 1431 he was appointed to a commission with sweeping powers to inquire into concealments throughout the north of England; in the following April he was named as an assessor of the parliamentary subsidy in Newcastle; and in April 1432 he attested the parliamentary elections for both town and county. In respect of the latter he witnessed, in company with his half-brother William, the election of their father.
This remarkable period of activity in the early 1430s was not to be repeated. Thereafter Bertram remained active in the affairs of Newcastle, attesting the town’s parliamentary elections in 1442 and 1453 (when he again also attested the county election), but little else is known of him.
