 According to some reports, Walkelin died in 1190 at the Siege of Acre, Jerusalem.Others place his death at Oakham Castle in Rutland, although this probably refers to his second cousin, Walkelin de Ferrers, the lord of Oakham.The ancient Derby School may have been first established by William de Barbâ Aprilis and Walter Durdant, Bishop of Lichfield, in the reign of Henry II.