[hiedeemom]

In extreme case there may be a chance that noone will be able to speak to anyone, apart from husband and wife to each other and to their own families. Lets say a polish guy marries a spanish girl and they communicate in english to each other. The guy wont be able to speak to his parents in law and any wife's family and vice versa, plus the children- its possible that mother will teach them spanish and if father does not speak it they will be able to talk to mother behind fathers back lol.

I know one interesting case, its british Deputy minister Nick Clegg. I dont know details, but he is half Dutch, quarter Russian quarter English and to spice it up even more, his wife is Spanish.