My grandfather had 3 children: a son and 2 daughters; the son had a daughter (me), one of the sisters had a daughter; the other sister had no children.

Upon my grandfather's death, the inheritance property, 12 acres, was equally shared by the 3 surviving children for many years. Taxes were dutifully paid in a shared manner by all 3 surviving children, as well.

When the sister with no children died, we were told that she "gave" her share (3 acres)to her sister, which meant that my dad now had 3 acres and my surviving aunt had 6 acres.

Now that aunt with the 6 acres is deceased and her daughter is ready to "legally" claim her 6 acres, my dad is devastated, to say the least, at 85 years of age.

Therefore, my question is, can a will or a notarized letter or some other said document displace "inheritance" property regarding heirs in Louisiana. We have seen nothing, to date. But, we are definitely requesting, as we speak. We do not know if it was willed to her or how this was done.

My question is, in Louisiana, can "inheritance" property be given away via a will, etc. that could legally disinherit heirs??

You need to find out exactly how the deed to the property is titled. If each of the 3 children of your grandfather were named as tenants in common of the property upon the grandfather's death, then each can pass his/her portion on to their heirs as they choose (or, if they die intestate, the property passes according to state law - which means it passes to their children or their descendants, or to siblings if there are no descendants). But if they were named as tenants with right of survivirship, then each person's share of the property would pass on to the other surviving sibling(s)when they pass on. So - how was the propety titled?