St. Casimir is the patron saint of Lithuania and Vilnius province. He was a member of the Gediminas dynasty born in 1458 in Cracow and died in 1484 in Grodno at age 26. He was canonized in 1522 for his piety. The Kaziukas Fair was started in Vilnius in the 17th century to celebrate St. Casimir's Day on March 4th, the day he died. It is an annual fair where people sell traditional handicrafts and features music, dance, and celebrations across Lithuania.