Law /
Inheritance Law in Poland (protecting myself from in laws) [25]
Your brother in law has some nerve - why have a kid if he cant support it ?
See a lawyer but as G says it might be best to put it in your own name though if you die first then it might be that your husband is back to square 1 and may have to use that to care for his mum (there is no legal obligation to provide for your brothers as far as I know)
Another possibility would be to put a small mortgage on the apartment in Poland, say for 10 percent of the value. That way nobody could try and get the apartment without also taking on the debt and while it's not much money for you it's a lot of money to a Pole who has no source of income.
I think at some point in the next 10 years the Polish inheritance laws will get a complete rewrite - in old days when everyone was a farmer or factory worker and nobody had any money and only small commie flats there was not always much worth arguing about.
Nowadays with wealth, emigration , more divorce, people living longer then the current system is just generating too many complications.