Contrary to popular belief, Colt 45 malt liquor wasn’t named after the famous handgun.
Peter J. Marcher Jr., master brewer for the National Brewing Company (in Baltimore, MD) and developer of the Colt 45 formula, named his beverage after a running back named Jerry Hill. Selected by Baltimore in the third round of the 1961 NFL draft, Hill (pictured) played for the Colts from 1961-1970 and was a member of their Super Bowl V-winning team.
And just to confirm the obvious, Hill wore the #45 jersey during his playing days.
Source: The Baltimore Sun