According to the good folks over at
BaseballAlmanac.com (second only to the incomparable
BaseballReference.com as a resource for these Hall of Names expeditions), "There are more than three-hundred fifty sets of brothers who have made it to the Major Leagues. Twenty-five members of the National Baseball Hall of Fame had a brother who also played in the big leagues. Other interesting combos include World Series Appearances, All-Star Games and pitcher vs catcher match-ups."
So it would be hard to limit ourselves to just one team of all-brothers (and we're not even talking about Hall of Fame 1B Dan and one-season cuppajoe Art who were both Brouthers, but were not brothers) when, in point of fact, you could pretty much put an All-Star lineup together using just Alous, Waners, Niekros and Alomars -- the latter of which without even including dad Sandy Sr.
So let's make the rules just a bit more stringent ...