Year 1551 (MDLI) was a common year starting on Thursday (link will display the full calendar) of the Julian calendar.

Millennium: 2nd millennium
August 15: The Siege of Tripoli ends with Ottoman conquest of North Africa











Date unknown

  • Qizilbash forces under the command of Tahmasp I raid and destroy the cave monastery of Vardzia in Georgia.
  • In Henan province, China, during the Ming dynasty, a severe frost in the spring destroys the winter wheat crop. Torrential rains in mid summer cause massive flooding of farmland and villages (by some accounts submerged in a metre of water). In the fall, a large tornado demolishes houses and flattens much of the buckwheat in the fields. Famine victims either flee, starve, or resort to cannibalism. This follows a series of natural disasters in Henan in the years 1528, 1531, 1539, and 1545.
  • In Slovakia, Guta (modern-day Kolárovo) receives town status.
  • Portugal founds a sugar colony at Bahia.
  • Juan de Betanzos begins to write his Narrative of the Incas.
  • The new edition of the Genevan psalter, Pseaumes octantetrois de David, is published, with Louis Bourgeois as supervising composer, including the first publication of the hymn tune known as the Old 100th.


Maria Anna of Bavaria


Martin Bucer
Barbara Radziwiłł


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