page_title: 873
section_title: Britain
hierarchical_section_title: 873 / Events / By place / Britain
caption_attribution_description: Tahirid dynasty
context_page_description: Year 873 was a common year starting on Thursday of the Julian calendar.
context_section_description: The Danish Great Heathen Army, led by the Viking leaders Halfdan and Guthrum, attack Mercia and capture the royal centre at Repton (Derbyshire). The Vikings establish an encampment with a U-shape ditch, on the south bank of the River Trent and spend the winter there.
caption: Fall of the Tahirid Dynasty (eastern Persia)
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