It would be an exaggeration to say that Jeffrey was beloved by children everywhere. Truthfully, he was always cautious around kids and I think that children sense that. One thing for sure is that he was always considerate and as nice as he could be, and tried to treat children with respect. Not the big, loud, hand waving kind of "hey kids, let's all have fun!" kind of thing. It was more like he would listen respectfully and try to be honest with them. So, he was never the funny character some adults perceived him as; just another big kid that they could talk to and hang out with.
And he never, never missed sending his niece a card and a present on a birthday or holiday.