The 6 Nations championship kicks off on Saturday. The origins date back to 1871, when teams from England and Scotland played in the first-ever rugby union international match. In 1879, the Calcutta Cup was created as a prize for the winner of occasional matches played between teams from these two countries. In 1883 the Home International Championship, with teams from England, Wales, Scotland and Ireland, was created.
France officially joined in 1910 and it became known as the 5 Nations, although they were dropped between 1932-1946. with Italy joining in 2000 it became the 6 nations. So aside from a break caused by the First and Second World Wars, the championship in some form has been played for over a 134 years.
Whilst your ancestors may have played Rugby Union it was not until 1995 that it turned professional, so none could have made their living from playing. However, mention of your ancestors sporting life might be found in University alumni, school registers and of course newspapers.