For the benefit of the uninitiated: M-G is short for Mesterton-Gibbons, which is a single, hyphenated word that begins with M and has 17 characters including the hyphen. In other words, my last name is NOT Gibbons, it is Mesterton-Gibbons, and there are only two logical ways to abbreviate it: If you consider a hyphenated word to be primarily a compound word, then the logical abbreviation of Mesterton-Gibbons is M-G, whereas if you consider a hyphenated word to be primarily a long word, then the logical abbreviation of Mesterton-Gibbons is Mesterton. Obviously, I prefer M-G to Mesterton (though I answer to either).