**John Napier**

Apr 4 John Napier, Scottish mathematician and inventor (logarithms), dies from effects of gout at 67

**Apr 24**Carlo Concino, French marquis of Ancre/state advisor, murdered

Apr 4 John Napier, Scottish mathematician and inventor (logarithms), dies from effects of gout at 67

**Apr 24**Carlo Concino, French marquis of Ancre/state advisor, murdered