Attached to the south side of the chancel is a large and lofty chapel, in ancient times variously called “The Leybourne Chapel” and “The Trinity Aisle.” There is every probability that it was founded about the year 1300, by one of the Leybournes of Berwick, as a place of sepulture for the family, and was subsequently enlarged into its present form by the Drapers’ Company of the town, soon after their incorporation in 1461. In the south-east wall are three stone sedilia, with canopied arches; and on the north side of the altar, a small locker, once used for keeping the Eucharist. A fine pointed arch, in the pure style of the 14th century, communicates with the chancel through the north-east wall. Under this is an altar, tomb, (probably of SIMON DE LEYBOURNE, lord of Berwick, who died between 1300 and 1315,) [Picture: Altar-tomb, Simon de Leybourne] the sides of which are adorned with canopied niches, formerly containing figures; and on the table reclines the figure of a knight, cross-legged, and in chain armour. In this tomb the headless corpse of Thomas Percy, Earl of Worcester, “ill-spirited Worcester,” who was taken prisoner at the battle of Shrewsbury, 1403, and beheaded, is believed to have been interred. The windows on the south side contain figures in stained glass:—commencing eastward the subjects are—St. Christopher, Count Horne, St. Catherine:—Bishop, Count Horne, St. John, St. Catherine, St. Barbara:—St. John the Baptist, Angel, Count Horne, Joseph of Arimathea, and the dead Saviour, St. Anne, Angel, Countess Horne:—Bishop, Countess Horne, St. James, with armorial bearings of the family of Horne. Several of these figures are old, the rest are modern, executed by Mr. D. Evans, after designs by P. Corbet, Esq., of this town. Underneath which is a rich Gothic monument to Master WIGRAM. [Picture: Monument to Master Wigram]