Brigham Young sent a large group of Welsh converts to settle the Malad Valley. They still have a lot of the old Welsh traditions and are quite upfront and proud of their history. You can find a lot information here.
http://welshfestival.com/Quote:
Malad Valley residents invite everyone to the Malad Valley Welsh Festival to celebrate the rich Welsh heritage that has contributed to the quality of life in the settlement of this beautiful valley.
Welsh pioneers were the first to settle in the Malad Valley in the 1860s. One of their many Welsh traditions was an annual cultural arts event called an eisteddfod, with roots going back 900 years.
Eisteddfod was celebrated locally for many years until World War 1. In 2005, after a 90 year break, this annual cultural event, now called the Malad Valley Welsh Festival, once again became a reality.
Today, Malad Valley, Idaho, has the largest per-capita concentration of people of Welsh ancestry outside the country of Wales itself. For that reason, many residents of the Valley enjoy reestablishing their Welsh roots.