Legal Question in Real Estate Law in California

Your question is governed by Danish law, possibly with some impact of the law of your brother-in-law's place of residence if it is not Denmark. It will depend on Danish law of wills, if his brother has a will, or intestate succession if his brother does not have a will. Under Anglo-American legal principles it would most likely pass to your brother-in-law's wife and/or children, unless he wills it to someone else. I have no idea what Danish law says on the subject. As for your interest, under most states' law in the U.S. you personally would have zero right/interest even if your husband received the property or a share of it. In most states (all states I know of) inherited property is not marital property. Unless transmuted it is the sole and separate property of the spouse who inherits it.