English mathematician Henry Briggs died #OTD in 1630.
He is notable for changing the original logarithms invented by John Napier into common (base 10) logarithms, which are sometimes known as Briggsian logarithms in his honour. The specific algorithm for long division in modern use was introduced by Briggs c. 1600 AD. Historically', the "common logarithm" was known by its Latin name logarithmus decimalis or logarithmus decadis.