John Napier Apr 4 John Napier, Scottish mathematician and inventor (logarithms), dies from effects of gout at 67 MathematicianJohn Napier Apr 5 Alonso Lobo, Spanish composer (Versa est in luctum), dies at 62 Apr 24 Carlo Concino, French marquis of Ancre/state advisor, murdered 1616 Famous Deaths by Year 1618