Heirship

My husbands family own the oil rights to 124 acres in Mississippi. My husband passed 5 years ago and his brothers leased out the rights. Am I entitled to my husbands part? I live in Louisiana and realize different states have different laws. Does anyone have knowledge about this?

Also how can I find out who the oil company is. It was Falmouth in 1985 but I don't know if they still own it.

You need to consult with an attorney.