With Friends like these ...

In 1642, when civil war finally erupted between Monarch and Parliament in England, only twelve of the King’s Privy Council of 1640 sided with the King, while six sided with Parliament, and six remained neutral.

Way to spot loyalty, Charles!

(Serious point: this war split the nobility. It also split the merchants etc. It wasn't a stand-off between a bourgeoisie one side, aristocracy the other).