Notable monuments elsewhere in the city include the Alan Turing Memorial in Sackville Park commemorating the father of modern computing. A monument to Abraham Lincoln by George Gray Barnard in the eponymous Lincoln Square was presented to the city by Mr & Mrs Charles Phelps Taft and marks the part Lancashire played in the American Civil War and its consequence the cotton famine of 1861–1865. In the entrance to Watts Warehouse is a bronze statue, "The Sentry", by Charles Sargeant Jagger, a memorial to the staff of S & J Watts & Co who died in World War I. The city's principal war memorial is the Cenotaph in St Peter's Square, designed by Edwin Lutyens after his original in London.