MLB players with same last name that hit homers in the same year

Someone on the SABR-L mailing list noted that there were 5 players with the last
name Ramirez that had hit homers by August of the 2008 season and 4 of them
had 10 or more. Followups mentioned other names and numbers so I decided to
grab data from www.baseball-databank.org and sorted through the data. (Through 2007)

Most home runs by players with the same last name in a year:

Total
Homers		SurnameYear  NameHRNameHRNameHRNameHRNameHRNameHRNameHR
158Davis1987  Eric37 Alvin29 Glenn27 Chili24 Mike22 Jody19   
129Davis1986  Glenn31 Eric27 Jody21 Mike19 Alvin18 Chili13   
126Gonzalez2001  Luis57 Juan35 Alex17 Alex9 Wiki8     
120Davis1989  Glenn34 Eric34 Chili22 Alvin21 Mike5 Jody4   
105Rodriguez1999  Alex42 Ivan35 Henry26 Liu1 Felix1     
105Davis1988  Glenn30 Eric26 Chili21 Alvin18 Jody7 Mike2 Mark1
100Davis1985  Mike24 Glenn20 Alvin18 Jody17 Chili13 Eric8   

Most different players with same last name to hit homers in a year was 7, done 5 times:

SurnameYear NameHRNameHRNameHRNameHRNameHRNameHRNameHR
Wilson2003  Preston36 Craig18 Jack9 Vance8 Tom5 Dan3 Enrique3
Wilson2002  Preston23 Craig16 Tom8 Dan6 Vance5 Jack4 Enrique2
Martinez1991  Edgar14 Chito13 Carmelo10 Dave7 Carlos5 Tino4 Ramon1
Davis1988  Glenn30 Eric26 Chili21 Alvin18 Jody7 Mike2 Mark1
Davis1984  Alvin27 Chili21 Jody19 Eric10 Mike9 Glenn2 Butch2

Most different players with same last name to hit 10+ homers in a year was 6, done 2 times:

SurnameYear NameHRNameHRNameHRNameHRNameHRNameHR
Davis1987  Alvin37 Chili29 Eric27 Glenn24 Jody22 Mike19
Davis1986  Glenn31 Eric27 Jody21 Mike19 Alvin18 Chili13

Most different players with same last name to hit 20+ homers in a year was 5, done 1 time:

SurnameYear NameHRNameHRNameHRNameHRNameHRNameHR
Davis1987  Eric37 Alvin29 Glenn27 Chili24 Mike21 Jody19
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