Must I list my illegitimate child in my will?

You may draft your last will & testament as you please, but it is advisable that you list all of your children in your will so that their identities are known and to prevent others from coming forward and claiming to be a rightful heir upon your death. You may gift as much or as little of your assets to your children as you please, but it is probably a good idea to include all of their names for identification purposes.