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Centuries: 8th century - 9th century - 10th century Decades: 790s 800s 810s 820s 830s - 840s - 850s 860s 870s 880s 890s Years: 839 840 841 842 843 - 844 - 845 846 847 848 849 Events Succession of Pope Sergius II (844 - 847). Rhodri the Great becomes king of Gwynedd. June 15: Louis II is crowned emperor. Dorestad is raided by Vikings. Births Deaths January 25: Pope Gregory IV (827 - 844) Merfyn Frych[?], king of Gwynedd
Centuries: 8th century - 9th century - 10th century
Decades: 790s 800s 810s 820s 830s - 840s - 850s 860s 870s 880s 890s
Years: 839 840 841 842 843 - 844 - 845 846 847 848 849
Births
Deaths