Allen Deryck Norman De Garrs M.A. (Oxon.) - Emeritus Professor of Applied Mathematics, The University of Sheffield. Passed away in Hospital on March 14 2010 aged 91 years. Memorial service at Ranmoor Church on Friday March 26 at 1.00 p.m. No flowers please, donations payable to “The University of Sheffield” (for the scholarship fund) may be sent to Adam Heath, John Heath and Sons, 2 - 16, Earsham St, S4 7LS.Deryck Allen was Head Prefect at KES in 1936-37 and presented the prizes at speechday in 1965. See the related search.