User blog comment:Donut4/ANOTHER QUESTION!/@comment-217.164.9.142-20120401184142

I think there are a variety of reasons Harry did not confide in Mr. Weasley. Here are some of my ideas:

1. Someone might have overheard them.

2. Mr. Weasley was very concerned for Harry's safety. If Harry informed him of his true identity, he might have tried to persuade Harry, Ron, and Hermione to leave the Ministry of Magic at once.

3. Mr. Weasley was known to have previously been in contact with Undesirable Number One (Harry Potter). The Ministry might have tried to torture Harry's whereabouts out of him. So, the less he knew, the better.

4. Informing Mr. Weasley that Harry, Ron, and Hermione were in the Ministry disguised would mean having to tell him about the mission to destroy Lord Voldemort. As Albus Dumbledore had told Harry this in the strictest confidence, it would have to be kept secret.

I hope to have been of help!

Your fellow Harry Potter fan,

V.S.