What organization did the woman, who Märta Ulfsdotter was the head lady in waiting of, found?
Märta Ulfsdotter: Margareta "Märta" Ulfsdotter, in Norway known as "Merete Ulvsdatter" (1319-1371), was a Swedish noble and lady in waiting. Märta Ulfsdotter:  She was the daughter of Saint Bridget of Sweden and the head lady in waiting of Margaret I, Queen of Denmark. Margaret I of Denmark:  She was the founder of the Kalmar Union, which spanned Scandinavia for over a century.
Kalmar Union