DERBY, William I, of Bermondsey and Southwark, Surr.
He is not to be confused with William Derby, citizen and glover of London, who appeared in 1374, 1381 and 1382 as a mainpernor in Chancery (CCR, 1374-7, pp. 62-63; 1377-81, p. 525; 1381-5, p. 230).
DERBY, William I