A genealogical sketch is here. She is one of the more notorious women in history, according to this Swedish-language article. But her Swedish-language Wikipedia article says supporting evidence from contemporary accounts is not available.
Information traveled slowly in 1640, possibly shown by Beata Yxkull in early 1630s dress with balloon virago sleeves and deeply tabbed jacket bodice.
Keywords: 1640, Beata von Yxkull, Yxkull family, Gyllenstierna family, Swedish, wavy coiffure, hair jewelry, earrings, upper partlet, high neckline, necklace, lace lower partlet, scoop neckline, jacket bodice, jeweled bateau décolletage, brooch, lace neckline ruff, lace bertha, jeweled clasps, jewled bodice ornament, long virago paned puffed sleeves, lace cuffs, lace back-flared cuffs, bracelets, waist band, close skirt, jeweled gloves, feather fan