The teacher's union has found an unlikely 'ally' in the company. [=the company supports the position that the union has taken and this was not expected]
He'll even admit that he's hoping to 'ally' himself 'to' a wealthy family by marriage.
countries 'allying' themselves 'with' the EU
(..) This is what I do for living. This faceless man with whom you find yourself in business is no ordinary criminal. He's the Napoleon of crime. Fortunately, You now have me as an ally. I'm a consulting detective of some repute... Perhaps you've heard of me. My name is Sherlock Hol.. Holmes.. (..)2011 Sherlock Holmes: A Game of Shadows