My dad is not British. When I was with my exh I always said which names I would use for a future boy or girl. Both names are traditional family names from my dad's home country. I recently learnt from exMIL (the only one who has any contact with DD for the past 20 years) that exh has remarried and has two more children, a boy and a girl, who have been given those names. 
Now I know I don't own them and I'm really not bothered from a 'you stole my names' perspective. But isn't it a bit weird when the only connection with that culture and those names is your ex wife? I can't help but wonder if his new wife knows where they come from
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I find it a bit creepy/stalkerish. AIBU?