My DH has a cousin, who I have met once in 5 years. That was the only time he's also seen her in 5 years...we just don't go up north often. I know all of his other 'up north' cousins pretty well, but this particular cousin is more involved with her husbands family. Anyway, she named her son Liam. Liam has been my favorite name for a boy for as long as I can remember. I mentioned to my MIL that I liked the name, and immediately she says "Oh, you can't do that, 'cousin' named Liam that." I mean, she is closer with this cousin because cousin is her niece, so I see where she's coming from, but I hardly know the woman...and DH is admittedly NOT close to her at all.
What would you guys do? I doubt I will see this woman again in the next 5 years, but I don't doubt that I wouldn't get crap from my MIL for years to come if we chose Liam for a boy's name. She is just that way.