Question: Who is Christina Natt Och Dag's maternal grandfather?
Sentence (from "Christina Natt och Dag"): This signified a permanent reorganization of the Swedish Royal Household: previously, there had been only one Mistress of the Robes with the title "Hovmästarinna" ('Court Mistress'), but now, Beata Oxenstierna was additionally given the newly invented title of "Överhovmästarinna" ('Chief Court Mistress'), and from the reign of Christina onward
Relevant evidence: No