This rare and unusual name is probably Norse-Viking pre 10th Century in origin, being a development of "Losteinn", itself a form of the Roman (Latin) "Justinius". The name translates as one who is upright and worthy, the modern surname is probably of East Anglian origin but this is not proven with absolute certainty. The meaning of "Youster", although appearing to be job descriptive, is probably occupational as "the Friend or Servant of Just". The name recordings include Thomas and Eliza Youster married at St. Georges Church, Birmingham on November 5th 1865. The records also show the christenings of four of their children: George Joseph (1867), Sarah (1869), Samuel (1871) and John (1873). The first recorded spelling of the family name is shown to be that of Charles Youster. which was dated September 13th 1663, christened at St. Botolph without Aldergate, London, during the reign of King Charles II, "The Merry Monarch", 1660 - 1685. 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.