List of Major League Baseball umpires (G–M)

The following is a list of baseball umpires with surnames beginning with the letters G through M who officiated in Major League Baseball (MLB). The list includes those who worked in any of four 19th-century major leagues (American Association, National Association, Players' League, Union Association), one defunct 20th century major league (Federal League), the currently active Major League Baseball, or either of its leagues (American League, National League) when they maintained separate umpiring staffs.

Source: Wikipedia — List of Major League Baseball umpires (G–M) (CC BY-SA 4.0)