This name is a very rare and unusual variant spelling of the Old Breton - Cornish habitational word 'Treuren' which translates as 'the homestead of Urien'. We have not been able to identify the precise location, but the name in the various spellings of Trewren, Truran, Truren and Treuran is well recorded in the Truro - Cambourne area from at least the reign of the first Elizabeth. The recordings include John Truren of St. Gluvias, in 1628, Doretie Trewson of Par in 1605, Ann Trewren of Madron in 1623 whilst Andrew Truran was recorded at Kenwyn, Cornwall, on November 25th 1773. The first recorded spelling of the family name is shown to be that of Elizabeth Truryn, which was dated April 21st 1601, married Thomas Cooke at St. Columb Minor, Cornwall, during the reign of Queen Elizabeth I, 'Good Queen Bess', 1558 - 1603. Surnames became necessary when governments introduced personal taxation. In England this was known as Poll Tax. Throughout the centuries, surnames in every country have continued to "develop" often leading to astonishing variants of the original spelling.