This entity entered a defensive alliance with England a ter its  rst leader married a non-Portuguese Philippa of Lancaster; that marriage was part of an unsuccessful plan to also marry its  rst leader's sister to the Prince of Wales.
This entity's establishment on the feast day of a saint from Antioch re lected its organizer's birth in prison. This entity entered a defensive alliance with England a ter its  rst leader married a non-Portuguese Philippa of Lancaster; that marriage was part of an unsuccessful plan to also marry its  rst leader's sister to the Prince of Wales. One of this body's leaders was nicknamed the "Bark King" a ter a series of bad harvests; that  gure, Christopher of Bavaria, became this body's leader a ter its  rst head's overthrow. The nickname "King Pantsless" was given to this polity's organizer by Albert of Mecklenburg, whose defeat allowed this body's creation by the regent for the child king Olav IV. This entity's  rst ruler changed his name from Bogislav to lead this organization, which was founded to counter the power of the Hanseatic League. For 10 points, name this combination of three kingdoms set up to be ruled by Erik of Pomerania by the connivances of Margaret I of Denmark.
This entity's establishment on the feast day of a saint from Antioch re lected its organizer's birth in prison.
Kalmar Union [or Union of Kalmaris; or Kalmarunionen; or Unio Calmariensis]