Martinez
The Martinez is a classic cocktail that is widely regarded as the direct precursor to the Martini. It serves as the basis for many modern cocktails, and several different versions of the original exist. These are generally distinguished by the accompaniment of either Maraschino or Curacao, as well as differences in gin or bitters. The true origin of the Martinez cocktail is unclear. Two early stories attribute the making of a cocktail named the Martinez to bartender Jerry Thomas at the Occidental Hotel or by a bartender by the name of Richelieue who worked at a saloon in Martinez, California. Both stories are difficult to verify because records of drinks at the time are missing or incomplete, but the 1887 edition of Thomas' The Bar-Tender's Guide includes a recipe for the Martinez. It calls for a pony of Old Tom gin, a glass of vermouth, two dashes of Maraschino, and a dash of Boker's Bitters with ice, garnished with a slice of lemon. A 1884 drink guide by O.H. Byron released just a few years earlier also listed a recipe for a cocktail called the Martinez by saying only: "Same as Manhattan, only you substitute gin for whisky." The book contained two recipes for a Manhattan, one of which called for 2 dashes of curaçao, 2 dashes of Angostura bitters, 1/2 a wine-glass whisky and 1/2 a wine-glass of Italian vermouth.
Source: Wikipedia