Boehner is not the first Republican house leader to run into trouble. A thumbnail sketch of some past Republican house speakers and minority leaders shows that most have had defections from within their ranks and had to struggle to maintain power.
Throughout American history, political family dynasties have not been uncommon. However, these families have not always acted in unison. In fact, in some cases American political families have been split asunder by divergent political loyalties.
Outliers who get elected are also usually the most electorally vulnerable in that they invariably represent states and Congressional districts inhospitable to their party's ideology. The Republican Party, once the liberal party is now the conservative Party.
You do not have to have read George Orwell to know that one of the most abused words in the English language is "reform." It is almost as bad as our penchant for reviving old labels with the word "neo."