Percy Shaw Jeffrey
Percy Shaw Jeffrey, FRGS was a respected English schoolmaster and author of several books on a range of topics, including significant contributions towards the teaching of phonetics in schools. Jeffrey taught at a variety of schools before spending sixteen years as headmaster at Colchester Royal Grammar School. With his wife Alice, he retired first to South Africa, then to the town of Whitby, North Yorkshire, in 1916, where he spent his time between numerous trips to countries around the world.
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Source: Wikipedia