The geographical position of Bousbecque has an important bearing on the biography of the Ambassador; as the place is not marked in English maps, a plan of the district is given in this volume showing the relative positions of Bousbecque, Comines, Wervicq, Halluin, &c. It will be seen that Bousbecque lies on the river Lys, about two miles from Comines. In the times with which we shall have to deal, it formed part of the County of Flanders; it is now part of the French frontier, and is included in the Département du Nord. The neighbourhood of Bousbecque has a history extending to early times, for close to it stands Wervicq, marking with its name the Roman station of Viroviacum; in Bousbecque itself Roman paving-stones have been dug out on the road now known as the ‘Chemin des Oblaers;’ whence it may be assumed that the road mentioned in the itinerary of Antoninus, as running from Tournay to Wervicq, passed through Bousbecque. The depth of the river Lys, which is an affluent of the Scheldt, exposed the neighbouring country to the attacks of the Northmen; the hardy pirates sailed up the stream, and built their castles and forts on the banks of the river. Their descendants became the seigneurs, or lords, of the territories which their ancestors had won. A distinction must here be drawn between the seigneury of Bousbecque and the parish (now commune) of Bousbecque. The parish of Bousbecque contained a great many other seigneuries besides that from which it takes its name; notably, for instance, the seigneuries of la Lys and Rhume. The first mention of Bousbecque occurs in a deed, without date, but necessarily between 1098 and 1113; in it Baudry, bishop of Tournay, conveys to the Collegiate Chapter of St. Peter, at Lille, the whole tithes of Roncq and half the tithes of Halluin and Bousbecque (Busbeka).[13] In 1159, Wautier, Seigneur of Halluin, husband of Barbe daughter of the Count of Soissons, conveys to the Abbey of St. Aubert, with the consent of his wife and his children—Wautier, Roger, Guillaume, Alix, and Richilde—his share of the tithes of Iwuy. The Roger here mentioned, married Agnes de Bousbecque; hence we see the high position held at that early date by the family of Busbecq;[14] a daughter of their house was considered a proper partner for a nobleman of royal family, the grandson of a Comte de Soissons. Adjoining the seigneury of Bousbecque lay the seigneury of la Lys, and in 1298 both these seigneuries are found in the possession of the same person, mention being made in the archives of Lille of ‘William de la Lys, sire de Bousbeke, fius Monseigneur William de la Lys, ki fu sire de Bousbeke.’ Thus for a time the title by which the family was known was not Bousbecque, but la Lys. In December 1348, was signed the Treaty of Dunkirk, by the Earl of Lancaster, the Earl of Suffolk, and Sir Walter Manny on the part of England, and on the part of Flanders, by ten delegates of rank; among their names is found that of Jehan de la Lys.