Swayn, a weaver, first appears in the records as chamberlain of Reading and witness to the parliamentary electoral indenture of 3 Nov. 1417. Thereafter, he attested seven more elections in the town, an indication of his place among its elite.
Two years after he represented the borough in the Parliament summoned to Leicester in 1426, Swayn was appointed to collect in his home county the special subsidy on parishes and knights’ fees granted in the succeeding Parliament. Accordingly, he conducted inquiries at Reading and Wallingford (on the same day, 4 May 1428) to discover those liable to be taxed.
Swayn is last recorded attesting the parliamentary election indenture of 13 Jan. 1442,
