Commr. to arrest persons exporting wool to Scotland May 1380;
Constable of Norham castle and steward, sheriff, escheator and c.j. of the bp. of Durham’s liberty of Norhamshire and Islandshire, Northumb. 14 Apr. 1385 – 20 Dec. 1395; justice of special assize, Norhamshire and Islandshire c.1389.
Envoy to Scotland on various diplomatic missions 3 July, 2 Oct., 18 Dec. 1389, 1 Mar., 27 May-28 June, Dec. 1390, 12 Mar., 27 June, 13 July 1391, 26 Jan., 30 May, 20 July, 15 Nov. 1392, 27 June, 22 Aug., 26 Oct. 1393, 9 Feb., 20–27 Aug. 1394, 12 Feb., 6 May 1395, 16 Mar., 22 Sept. 1398, 14 Jan., 22 Oct. 1399, 7 Aug., 4 Dec. 1400, 18 Mar., 10 Apr., 1–28 Sept. 1401, 6 Aug. 1403.
Chancellor and chamberlain of Berwick-upon-Tweed 4 Dec. 1391–d.
Supervisor of murage and pontage, Berwick-upon-Tweed and Roxburgh 2 Mar. 1392.
J.p. Northumb. 12 Nov. 1397–1403.
Collector of customs and subsidies, Berwick-upon-Tweed 9 Dec. 1397–6 Dec. 1403.
HERON, Sir Gerard (-d.1404)
