Deaths on April 7

Lennart Torstensson, Swedish field marshal and engineer (b. 1603)

Lennart Torstensson, Count of Ortala, Baron of Virestad (17 August 1603 – 7 April 1651), was a Swedish Field Marshal and military engineer.

30 Jun

Khmelnytsky Uprising
The Deluge: Khmelnytsky Uprising: The Battle of Berestechko ends with a Polish victory.
15 Dec

Third English Civil War
Castle Cornet in Guernsey, the last stronghold which had supported the King in the Third English Civil War, surrenders.