Allingham was the last known survivor of the Battle of Jutland , considered the greatest battle of World War I . Henry Allingham died in his sleep at a care home in Ovingdean , England . Queen Elizabeth , Prime Minister Gordon Brown pay respects to Allingham . Score: 6 Guinness Book of World Records says Allingham was world 's oldest man .
Henry Allingham died in his sleep at a care home in Ovingdean , England . Queen Elizabeth , Prime Minister Gordon Brown pay respects to Allingham . Score: 6 Guinness Book of World Records says Allingham was world 's oldest man .