Steven's three children--Kelly, Jarrett and Sean--have joined the battle, suing Grandpa's estate to oust Castellano and revoke the probate of the 2001 will.

FORBES: All in the Family

To clarify, as has been raised to us by counsel for Branca and McClain since our article first was posted, the will was admitted to probate and the time period for challenging of the validity of the will under California law passed, which has the effect of determining that the will is valid.

FORBES: Michael Jackson's Siblings Promise New Fight Over His Estate

After The Monkees frontman, Davy Jones, died of a heart attack at age 66 on February 29, 2012, his family took the very unusual step of having his will and related probate court documents sealed perhaps to shield family disharmony from public view.

FORBES: Monkey Business Surrounding Davy Jones Estate

An executor typically offers the will for probate, takes action to protect the assets of the estate, makes distributions of property to beneficiaries and pays the debts and taxes of the estate.

FORBES: Understanding the Role and Responsibilities of an Executor

If you own out-of-state real estate, a living trust will help your heirs avoid going through probate in multiple states.

FORBES: Do You Need a Living Trust?

During Monday's hearing, Beckloff asked one of her attorneys, Burt Levitch, if there was any objection to admitting the will for probate -- without deciding who its executors will be.

CNN: Michael Jackson's mom gets custody of kids

That theoretically allows your heirs to avoid probate--the process by which a court supervises the distribution of your assets according to the terms of the will.

FORBES: Magazine Article

This determines who will receive your property at your death, how much of your property will go to the government in taxes, and whether your property will pass through a probate estate.

FORBES: Estate Planning Overview and Objectives

Given the questions surrounding the validity of the letter, and the fact that a spouse normally has first priority to be named as executor in the absence of a valid will, it may take some time until a person is put in charge of her estate through probate court.

FORBES: Jenni Rivera's Estate Heading For Turmoil