Henry William Allingham (6 June 1896 – 18 July 2009) was a British supercentenarian, the oldest British man ever, First World War veteran and, for one month, the verified oldest living man in the world. He is also the second-oldest military veteran ever, and at the time of his death, he was the 12th-verified oldest man of all time.Allingham was the oldest ever surviving member of any of the British Armed Forces and one of the oldest surviving veterans of the First World War.