Calling child by middle name

[smallandneedy.livejournal.com]

This is kind of related to the post about grandparents and other people insisting on calling kids something else than what their parents have decided their name is.

I was wondering, is it considered offensive or annoying to call a child by their middle name even though their parents call the child by their first name?

Edited to add:

What if the situation was reversed, as in parents calling their children by their middle names but other people call them by their first? I know a whole family with 4 children where all of them including the parents go by their middle names and not their first.

Is calling someone by their first name when they go by middle less offensive than calling someone by middle rather than first?

Comments

[joereaves.livejournal.com]

Re your eta - you call someone by what they (or if they're too young to have an opinion their parents) want to be called. Obviously if you have no idea what they like to be called most people will assume that the first name is the one to pick and if the kid isn't usually called by that then it's not reasonable to expect someone to know that, but once you do know then yes of course it's rude to call them something else, whether it's their middle name when they use their first name or their first name when they use their middle name.

I'm not entirely sure why anyone would need to ask - calling someone by a different name than the one they want you to use is clearly annoying and rude.

[smallandneedy.livejournal.com]

I just think it's interesting to see what people think because personally it wouldn't bother me if people used middle name instead of first. I mean, for me, both the first name and the middle name I would have given my child would be names I liked, and although he/she would probably not be called both on a daily basis but both names would be theirs.
Some people have called me by my middle name because of various reasons - sometimes it's easier for them to remember it, easier to pronounce, whatever really, and I still answer to it because that is my name too. Obviously everyone will automatically correct the person saying pretty much their whole name so I don't mean calling a kid Jordan for 18 years if his first name is Cory, but more in the short run until everyone gets used to it.