 In 1909 , Wales won the Home Championship and then , in 1910 – with the inclusion of France – the first @-@ ever Five Nations . In 1911 , Wales took the first Five Nations Grand Slam by winning all their matches in the Five Nations ; France were heavily defeated by Wales at St Helens in 1910 ( 49 – 14 ) and Ivor Morgan scored two tries in the match . It would be nearly forty years before they achieved a Grand Slam again . England 's defeat of Wales at Cardiff in 1913 was Wales ' first home loss to one of the Home Nations since 1899 , and their first home loss to England since 1895 . The Great War came in 1914 and rugby was suspended for the duration . 
