In other reporting it did seem he was proactive in contacting the parliamentary authorities once he received advice on the donations. The spouse situation is tricky because his wife isn't an elected official or even a political operative. However I doubt the donations would have been made of she doesn't sometimes appear with her husband on official occasions.
Also the pearl clutching by the Tories is hypocrisy of the highest order given some of the stuff their members got away with.
Still it's not a good look and hopefully the party officials are making sure other ministers are up-to-date on all declarations. You don't want this to be the start of a string of stories.