It would depend on how he wrote his will.
If he left his money to “my children” then yes.
If he left his money to “My children, Denise, George, and Fred” and you are not any of those people then no.
LOL. Get real. The will went through probate 30 years ago if there was one. Any money is long gone.
Wills are funny things.
And if there are trusts involved it can be even more complicated.