1856

1856 was a year.

Dated
In July, Catch-the-Bear built his war bonnet, rapidly rose to the rank of war chief, and just as quickly went insane. He died in December. (PROSE: The Book of the War)

Alternate timelines
In an alternate timeline, the Sixth Doctor and Evelyn Smythe witnessed the 100th birthday of Wolfgang Amadeus Mozart. They learned that history had been altered by a Mozart clone from the far future, then travelled to 1791 to make sure that he died in that year. (AUDIO: My Own Private Wolfgang)