Sigrid Brahe (1568–1608), was a Swedish countess, known for the great scandal Onsdagsbröllopet (The Wednesday Wedding) in 1595.
The engagement was made against the will of Sigrid Brahe, who was in love with baron Johan Nilsson Gyllenstierna.
When she was made aware of the gossip that her betrothed had been given a venereal disease in Poland, she fled to the court of Princess Anna at Stegeborg Castle and placed herself under the protection.
The same day, the 19 March 1595, Princess Anna ordered her court to assemble in her chapel: she had the envoy Lindorm Nilsson Lilliehöök of her brother King Sigismund escort Gyllenstierna to the chapel, while she herself escorted Brahe: they took the couple to the altar, and before the eyes of her astonished court, she had her vicar conduct a wedding ceremony.
On Riksdag of 1595 in Söderköping, the feud was ended: Sigrid Brahe and Johan Gyllenstierna were sentenced to one-year house arrest in their country estate and fined for two thousand riksdalers: one thousand to the poor and the other half to Bielke.