Picking longer version of name for birth cert

[AnnieMay100]

Posting for a friend... she would like to call her first baby jack after her father and grandfather, but due to her married surname she’s having second thoughts (the k at the end of the name would make her surname sound rude when said in full) so she’s considering Jaxson/jackson/Jaxon for the birth certificate/school/work but calling him Jack in general. Does this kind of thing work? Would she be better choosing a new name/ double barrelling a first and middle name or would her plan be ok? Had a quick Facebook stalk of the name and it seems popular in America so can’t be all bad? I’m not sure what advice to offer so hoping you ladies can help

Is it Hunter? I really want to know what it is now. If any variation of Hunt she cannot call him Jack in my opinion, kids can be cruel.

I don't think this will work as a plan to avoid the name Jack ever being used with the surname.
By the time they get a few years into school, many children's names are automatically being shortened by their friends, particularly it seems amongst the boys, whether a traditional short form (William to Will; Thomas to Tom) or one which has just developed (Owen to O). This happens even when the parents are using the long name. If the parents are using the short name, there is even less chance of the long name being used officially as staff (other than the class teacher who has it on the register) just won't know that he has a long name.
Do also think about about the first name/initial of surname combination. There may be several Jacks so he is likely to be known as Jack H (if the surname was Hunt) at least some of the time.

If its Gough (or whatever it is) then having a long name on the birth certificate won't make any difference will it? And I don't think you can control whether or not 'only family' call him Jack.

They need to go for something different. They could have Jack as a middle name as although they would still have the rude sounding name problem, it would be very rarely rather than every day.

I agree that if they call him Jack, he’s likely to be called Jack Hunt or whatever it is the whole time through school as there is likely to be another Jack as it’s so popular.

The names Jack, Jackson and Jaxon are not similar in any way other than the sound.

I also agree that, however much you like a name, if it leads to problematic associations due to the sounds, with the whole name, the shortened name, the initials, or any other standard shortening even if never intended to be used, you really need to think twice. Kids can be cruel, and the moment a combination is spotted you know it will be used.

I grew up with an unusual surname that was an "easy win" for teasing. You can't change that, but you can reduce any additional problems. Weirdly enough my married name is as bad as my maiden name, with more potential for problems with choices of initials - and we were extremely careful when naming our children. We nearly had a girl's name for our eldest when I ran it past my mother who immediately word-associated a common phrase with unfortunate connotation; it was ruled out straight away and I'm very glad we did.

Jack is traditionally "short" for John, but no idea why. The other names aren't good

Thanks everyone I appreciate the comments and agree with them, I don’t want to give away their surname as their family could be on here, now just to break it to her...