Births on April 15

Robert Sibbald, Scottish physician and geographer (d. 1722)

Sir Robert Sibbald (15 April 1641 – August 1722) was a Scottish physician and antiquary.

11 Mar

Battle of Mbororé
Guaraní forces living in the Jesuit reductions defeat bandeirantes loyal to the Portuguese Empire at the Battle of Mbororé in present-day Panambí, Argentina.
23 Oct

Irish Rebellion of 1641
Irish Catholic gentry from Ulster tried to seize control of Dublin Castle, the seat of English rule in Ireland, to force concessions to Catholics.
24 Oct

Irish Rebellion of 1641
Sir Felim O'Neill of Kinard the leader of the Irish Rebellion issues his Proclamation of Dungannon justifying the uprising and declaring continued loyalty to Charles I