Sir William de la Hay, of Locherworth

Sir William de Haya, of Locherworth. He first occurs in 1263, when as Willielmus de Haya, Dominus de Locherworth, he is named in a convention with the Abbot and monks of Inclicolm. Dominus Willielmus de Haya, filius Johannis de Haya, Militis, Domini de Locherworth, confirmed to the monks of Newbottle, the peatary of Locherworth, quam Robertus [de Lyne] filius David quondam Domini de Locherworth, et ipsius pater, illis dedit. This confirmation is undated, but, from the names of the witnesses, appears to have been granted between 1272 and 1295. Willielmus de Haya of Locherworth also witnesses a charter of Donald, Earl of Mar, to Sir Nicol Hay of Errol about 1290. William de Haya de Lochorvire had a payment of twenty marks in fee from the Royal chamber at Martinmas 1288 and Pentecost following, under a writ from the Guardians of the Kingdom 29 April 1289, and he gave a receipt for his fee of ten marks sterling for the past year at Scone 8 May following. He was present as a Baron at the Parliament held at Brigham 14 March 1289-90 to ratify the Treaty of Salisbury for the marriage of Queen Margaret to Prince Edward of England, he, then designed as 'Guillaume de la Haye,' and William Sinclair of Rosslyn being the only two representatives of the county of Edinburgh to appear.
Sir William de la Haye swore fealty to King Edward I. at Dunfermline 17 July 1291 and in the precept issued by the English King 18 August 1291, to Simon Eraser, Keeper of the Forest of Selkirk relating to the grant of stags to the Scottish magnates, he is to receive four. He was one of those nominated by the elder Robert Bruce to represent his claim to the Orown in the assembly summoned to meet at Norham by Edward I. 10 May 1291. Under the designation of William de la Haye de Loukorue he was summoned to appear before Edward 22 November 1293. Though originally an adherent of Bruce,he appears to have accepted the decision in favour of Baliol (17 November 1292), and supported that King in his endeavour to assert the independence of Scotland. He was, however, taken prisoner by the English at the capture of Dunbar 28 April 1296, and committed to Berkhampsted Castle 16 May. He again swore fealty to Edward at Berwick 28 August that same year, and had his lands of Locherworth restored by the English 10 September following, but remained in custody until 28 August 1297, when, by letters dated at Winchelsea 22 August, he was released on his undertaking to accompany Edward to Flanders, John, Earl of Atholl, being one of the sureties for him. He was doubtless the William de la Hay who witnessed an obligation of fealty to King Robert the Bruce at Auldearn in Moray 31 October 1308. This is the last reference to him that has been found.
The name of his wife has not been ascertained, but he is stated to have had issue:
1. Gilbert of Locherworth his heir.
2. Margaret, said to have been married to Henry de Maule of Panmure, temp. 1312-25.

Source: "The Scots Peerage" Vol 8, page 417.