Fictional character created by Carl Michael Bellman
Ulla Winblad is a semi-fictional character in many of Carl Michael Bellman's musical works. She is at once an idealised rococo goddess and a tavern prostitute, and a key figure in Bellman's songs of Fredman's Epistles. The juxtaposition of elegant and low life is humorous, while allowing Bellman to convey a range of emotions. Ulla Winblad has been called "one of the really great female figures in Swedish literature". The character was partly inspired by Maria Kristina Kiellström (1744–1798). Context.
https://en.wikipedia.org/wiki/Ulla_Winblad