Deaths on April 28

Johann Heinrich Abicht, German philosopher, author, and academic (b. 1762)

Johann Heinrich Abicht (4 May 1762 – 28 April 1816) was a German philosopher.

20 Feb

The Barber of Seville
Rossini's opera The Barber of Seville premieres at the Teatro Argentina in Rome.
10 Apr

Second Bank of the United States
The Federal government of the United States approves the creation of the Second Bank of the United States.
22 May

Ely and Littleport riots of 1816
A mob in Littleport, Cambridgeshire, England, riots over high unemployment and rising grain costs, which spreads to Ely the next day.
5 Aug

Electrical telegraph
The British Admiralty dismisses Francis Ronalds's new invention of the first working electric telegraph as "wholly unnecessary", preferring to continue using the semaphore.
14 Aug

Cape Colony
The United Kingdom formally annexes the Tristan da Cunha archipelago, administering the islands from the Cape Colony in South Africa.