Björn Kristian Ulvaeus is a Swedish musician, singer, songwriter, and producer best known as a member of the musical group ABBA. He is also the co-composer of the musicals Chess, Kristina från Duvemåla, and Mamma Mia! He co-produced the films Mamma Mia! and Mamma Mia! Here We Go Again with fellow ABBA member and close friend Benny Andersson. He is the oldest member of the group.

The Royal Order of Vasa is a Swedish order of chivalry founded on 29 May 1772 by King Gustav III. It is awarded to Swedish citizens for service to state and society especially in the fields of agriculture, mining and commerce. It is the most junior Swedish honour.