CROSAR, Crosier: Persons of this name were early settlers in Liddesdale, and c. 1376 we find "locus Croyser" in the rent-roll of the lordship (Armstrong, Liddesdale, p. 181, and App., p. iii). William Crosier, professor of philosophy in the newly founded University of St. Andrews, 1410 (Tytler, Hist, of Scot., 4 V ed., II, p. 42). William Croyser, a Scotsman at present in Bruges, in Flanders, to have a safe conduct in England in 1429 (Bain, IV, 1027), is perhaps Master William Croyser, archdeacon of Teviotdale, who had a safe conduct to travel in England in 1433 (ibid., 1062). James Crosare witnessed a declaration dated 1436 (Home, p. 20), and John Crosar witnessed an instrument of sasine of lands and castle of Temptalloune in 1475 (Douglas, III, 106). William Croyser held the parish church of Kyrthgunen (Kirkgunzeon) in 1418, and in 1424 he appears as canon of Dunkeld (Pap. Lett., VII, p. 67,344). In 1526 the duke of Richmond complained of the doings of the Crosaris and others (ALHT., V, p. 318), and a band against Crosars on the Border is recorded in 1569 (RPC., I, p. 652). William Crosar was witness in 1537 (Johnsoun), and John and Thome Crosare were entered before the warden, 1564 (RPC., I, p. 259). The Crosaris are included in the "Roll of the clannis that hes capitanes cheiffis and chiftanes quhome on thai depend oftymes aganis the willis of thair landislordis," 1587. Armstrong (Liddesdale, p. 181) gives the following old spellings of this surname: Singular: Crosair, Crosar, Crosare, Croser, Crosir, Crosore, Ciossar, Crosser, Crossr, Croysar, Croyser, Croyset. Plural: Cossyers, Crosares, Crosaris, Croseers, Crosers, Croseys, Crosiers, Crosrs, Crosyers, Crosseres, Croysaris, Croysiers, Croyssyers, Croziers, Cwsers, Grosars, Grossars.