Brasses become more numerous through the 14th century, and present great variety in their details. A good example is that of Nicholas Lord Burnell (d. 1382) in the church of Acton Burnell, Shropshire. In the 15th century the design and execution of monumental brasses had attained their highest excellence. The beautiful brass of Thomas de Beauchamp, 12th Earl of Warwick (d. 1401), and his wife Margaret, which formerly covered the tomb in St Mary's church, Warwick, is a striking example. One of the best specimens of plate armour is that of Sir Robert Stantoun (1458) in Castle Donington church, Leicestershire, and one of the finest existing brasses of ecclesiastics is that of Thomas de la Mare, Abbot of St Albans Abbey from 1349 to 1396. An interesting monumental brass of John Rudying dated 1481 in the Church of St Andrew in Biggleswade shows the figure of Death about to strike Archdeacon Rudying with a spear.