My Husband and I married 5 years ago and have one child born after our marriage. Last month my Husband died and a Will was discovered that was dated before our marriage leaving property to his children by his first marriage. Neither I nor our child is mentioned in the Will.
In 2020 Mississippi passed laws dealing with situations where a former spouse is listing in a Will or named on bank accounts and other matters. So you and your son are protected as of 2020.