22. The Ospreys, a regional team from Wales, were winners of the Celtic League on multiple occasions. For many years the Ospreys used the Liberty Stadium as their home ground thus sharing it with which professional football team?
From Quiz Rugby's Celtic League
Answer:
Swansea City
The Ospreys were one of the four Welsh regions that regularly took part in the Celtic League, the other three being the Scarlets, the Dragons and the Blues. The Ospreys represented Neath, Swansea, Bridgend and the surrounding areas of central south Wales. They shared the Liberty Stadium with Swansea City, a professional football team that became the first Welsh side ever to compete in the Premier League.
In addition to the aforementioned Welsh regional teams, another Welsh team took part in the 2003-04 season and that was the ill-fated Celtic Warriors (they lasted one season and folded). Their home gorund was taken over by the newly formed rugby league club, Celtic Crusaders (formed in 2005).