Question: Dina Vinhofvers became famous because of her involvement in an alleged conspiracy against a king that died in what year?

Context paragraphs:
Andalusian independentist conspiracy (1641): The Andalusian independentist conspiracy in 1641 was an alleged conspiracy of Andalusian nobility for Andalusia to secede from Spain.  The conspiracy was brought to an end in summer 1641 after the plans of rebellion were discovered.

The Third Terrorist: The Third Terrorist: The Middle East Connection to the Oklahoma City Bombing is a book by journalist Jayna Davis about evidence of an alleged conspiracy behind the 1995 Oklahoma City bombing.  The Justice Department initially sought, but then abandoned its search for, a Middle East suspect.  The book was published in April 2004 by Nelson Current Publishers, and became a New York Times best-seller.  In contrast to conspiracy theories that the bombing was a false flag attack perpetrated by elements of the US government, the book presents a theory that links the Oklahoma City bombers to agents of Iraq and Al-Qaeda, operating under Iranian state sponsorship.

Werner Mauss: Werner Mauss (born 11 February 1940 in Essen) initially worked as a private investigator for various German companies.  Since 1965 he exclusively worked as a civilian employee for police authorities and intelligence services.  The name Mauss became known to the general public in association with several political conflicts and alleged scandals.  The scandals included alleged conspiracy with terrorist organizations such as the ELN.

Dina Vinhofvers: Dina Vinhofvers (1620 – 7 July 1651) was a Danish silk worker who became famous because of her involvement in an alleged conspiracy of Corfitz Ulfeldt against King Frederick III of Denmark in 1650–51.

German Plot (Ireland): The "German Plot" was a conspiracy alleged in May 1918 by the Dublin Castle administration in Ireland to exist between the Sinn Féin movement and the German Empire to start an armed insurrection in Ireland during World War I.  The alleged conspiracy, which would have diverted the British war effort, was used to justify the internment of Sinn Féin leaders, who were actively opposing attempts to introduce conscription in Ireland.

Frederick III of Denmark: Frederick III (Danish: "Frederik" ; 18 March 1609 – 9 February 1670) was king of Denmark and Norway from 1648 until his death in 1670.  He also governed under the name Frederick II as diocesan administrator (colloquially referred to as prince-bishop) of the Prince-Bishopric of Verden (1623–29 and again 1634–44), and the Prince-Archbishopric of Bremen (1635–45).

Sultan Tangkal Alam Bagagar: Daulat Yang Dipertuan Sultan Alam Bagagarsyah (1789 – 12 February 1849, Batavia) was the last king of the Pagaruyung Kingdom.  He was the grandson of Sultan Muning Alamsyah.  He had four brothers and sisters: Puti Reno Sori, Tuan Gadih Tembong, Tuan Bujang Nan Bakundi and Yang Dipertuan Batuhampar.  Sultan Alam Bagagarsyah was appointed as regent of Tanah Datar after the Netherlands seized Pagaruyung from the Padri.  Because of an alleged conspiracy against the Dutch, Bagagarsyah Sultan Alam was arrested and exiled to Batavia, where he died in 1849.

Daniel Bamidele: Major Daniel Idowu Bamidele (1949 - March 5, 1986) was a Nigerian army officer who was executed by the government of Major General Ibrahim Babangida for failing to report an alleged conspiracy against the government, what is popularly referred to as the "Vatsa Coup".  Bamidele was charged with conspiracy to commit treason.

Loyd Jowers: Loyd Jowers (November 20, 1926May 20, 2000) was the owner of Jim's Grill, a restaurant near the Lorraine Motel in Memphis, Tennessee, where Dr. Martin Luther King Jr. was assassinated on April 4, 1968.  In 1993, Jowers appeared on ABC's "Prime Time Live" and related the details of an alleged conspiracy involving the Mafia and the U.S. government to kill King.  According to Jowers, the perpetrator, James Earl Ray, was a scapegoat, and was not directly responsible for the assassination.  Jowers said that he hired Memphis police Lieutenant Earl Clark to fire the fatal shot.  The existence of such a conspiracy, and Jowers' involvement, was supported in the verdict of a 1998 court case which was brought against Jowers by the King family.  The allegations and the finding of the Memphis jury were later rejected by the United States Department of Justice in 2000 due to lack of evidence.

Main Plot: The Main Plot was an alleged conspiracy of July 1603 by English courtiers, to remove King James I from the English throne and to replace him with his cousin Arabella (or Arbella) Stuart.  The plot was supposedly led by Henry Brooke, Lord Cobham, and funded by the Spanish government.  In a state trial, the defendants accused of involvement in the Main Plot were tried along with those of the Bye Plot.  It is referred to as the "main" plot, because at the time it was presented as the principal ("main") plot of which the secondary (or "bye") plot was a minor component.

Supporting paragraphs: Dina Vinhofvers Frederick III of Denmark
Answer: 1670