If someone is not available to speak for themselves, a person might say "on the behalf of *so and so* I would like to thank you...", or "on the behalf of *so and so* I am informing you...", or "on...
No. If you wouldn't say "on behalf of he" (and you wouldn't), then you can't keep the "he" there just because you added the family to the sentence. This kind of error is very common among native...