 Rikissa Birgersdotter

Rikissa Birgersdotter, also known as "Rixa", "Richeza", "Richilda" and "Regitze", ( 1237 – after 1288), was Queen of Norway as the wife of the co-king Haakon Haakonson, and then Princess of Werle as wife of Henry I.

Rikissa Birgersdotter was born as one of the eldest children in the marriage of lord Birger Magnusson of Bjelbo, later riksjarl and regent of Sweden, and Princess Ingeborg Eriksdotter of Sweden, eldest sibling of king Eric XI of Sweden.Rikissa's parentage is historically well attested, contrary to that of her supposed younger sisters.