Like most legal questions, the answer is "it depends." For example, say the wife said in her will that her husband should never remarry. She had no right to impose that on him, so obviously no court is going to hold him to that. On the other hand, say that the wife left a sum of money in a trust for him, on the condition that he never remarry, and that if he did he would forfeit the money to their children. If he remarried, the children could certainly draw him into court and demand the money. What I think you are implying in your question is that the husband is the executor of his wife's estate, and that he is not giving the beneficiaries of the will the money which it gives them. The beneficiaries have the right to draw the husband into a probate court and be held to account for his actions, but on the very limited facts given here, it is impossible to say whether they would win in court. Probate law is complex, and there are many reasons that the husband might escape what the will says (for example, if it was an improperly executed will). You should contact a lawyer and explain the facts of your case in detail to get a good answer to this question.
So the short answer is: they probably have a right to a hearing in probate court, but it is impossible to say whether they have legal rights to recover against the husband.
The spouse of a beneficiary has no rights to the estate. Removal of property without the executor's authorization could be prosecuted as theft.
Typically the spouse will inherit the property of a deceased spouse. A will may assign things to other beneficiaries. Consult a licensed attorney in the state in question.
You have full and primary rights to your children. Grandparents do not have custody rights to children over parents.
Spouse certainly not. Others possibly.
To choose the beneficiaries to your life cover plan you need to consider who you want to benefit in the event of your death. Most people choose their spouse and children as their beneficiaries.
The surviving spouse has legal rights regardless of whether he/she remarries after the death of his/her spouse.
NAMED beneficiaries of insurance policies do not pay tax on it.
The witnesses should not be related to you, and should not be beneficiaries. Your spouse has a statutory right to inherit from your estate whether or not he is mentioned in your will. You should pick objective witnesses instead of a spouse or other relative.
Equal rights and access see link
In many jurisdictions, a surviving spouse may have a right to inherit a portion of the deceased spouse's estate, even if not mentioned in the will. This is usually governed by laws that protect the rights of surviving spouses. It is advisable to consult with a legal professional to understand specific rights based on the laws of the relevant jurisdiction.
Depends on the will
Spouse means your married and thus yes they have alot of rights which a lawyer will usually refresh your memory on. If you mean girlfriend/boyfriend they are not a spouse