If a person who has no spouse or children dies the living parent(s) would be the next of kin for purposes of inheritance. You can check your state laws of intestacy at the related question link below.
Mother, if you mean wife of the deceased husband.
next of kin would be eldest child
The step son has no relationship to the aunt. So technically the niece would be the next of kin.
The son.
If you are speaking of the relative or relatives entitled to share in your property if you die intestate (without a will) then if you are unmarried your parents are your next of kin. If they were deceased then your sister would be your next of kin. In another sense they are all your next of kin. See related question link.
Generally, the grandchildren would be the next of kin. You can check state laws of intestacy at the related question below.
If the mother was not married her adult child(ren) would be her heir at law and next of kin. If she has a will it must be probated. If she died without a will her estate must be probated. You should consult with an attorney.If the mother was not married her adult child(ren) would be her heir at law and next of kin. If she has a will it must be probated. If she died without a will her estate must be probated. You should consult with an attorney.If the mother was not married her adult child(ren) would be her heir at law and next of kin. If she has a will it must be probated. If she died without a will her estate must be probated. You should consult with an attorney.If the mother was not married her adult child(ren) would be her heir at law and next of kin. If she has a will it must be probated. If she died without a will her estate must be probated. You should consult with an attorney.
It all depends on what the provisions of the estate documents state. However, next of kin means a blood relative so the distant cousin would be the heir. In order for the step son to be a next of kin they would have to have been adopted with the provisions stating that the adopted child would be considered as a natural born child of the deceased. Being that there is no will it will go by the guidelines of the intestacy laws (laws for a deceased without a will) which in most cases looks for the nearest blood relative. You may contest this through the courts but there is no guarantee that you will receive any of the money.
Without a will of intent all inheritance will go to the next of kin. The order of that is wife, father/mother, son and daughter.
The son would be the inheritor of the remains of the estate in all the rules if succession that I have ever seen.
In the United States and most Western countries a surviving spouse has the legal right to make decisions as the next of kin. In the Unites States and most Western countries when a parent dies leaving no surviving spouse, all his children are his next of kin. As for inheritance, you must check the laws of intestacy for your jurisdiction to determine who inherits. It varies in different jurisdictions. Most pass the decedent's property to the surviving spouse. Some jurisdictions also provide a share to surviving children. You can check the laws in your state at the related question link below.
Fitness depends on the individual, not a relationship. Next of kin, however, is usually a common way of saying "closest surviving relative" If the deceased was married, the surviving spouse is the closest relative. After the spouse usually come children, then siblings, then parents, then cousins.