A dialectually transposed spelling of a locational name which was originally either Tyburn, Tillingbourne or Tilbury, although the meanings are similar and derive from the Olde English personal name 'Till'. This name itself derives from 'Teal' (The Bird) or as a version of 'Matilda', the pre 7th Century female name which means 'The Mighty Battlemaid'! It is our opinion that the origination is from Tilbury as recorded below. The first recorded spelling of the family name is shown to be that of Richard de Tillebyr which was dated 1273, The Hundred Rolls of Essex. during the reign of King Edward 1 The Hammer of the Scots 1272 - 1307 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.