In legal matters, it's essential to consult with a qualified attorney who specializes in estate law to get personalized advice based on your specific circumstances.
In California, the distribution of a person's estate is generally governed by their will or by intestate succession laws if there is no valid will. When someone passes away, their estate is distributed among their heirs according to the state's laws.
If your father passed away before your grandmother, his share of her estate would typically be distributed based on the provisions in your grandmother's will or California's intestate succession laws if she did not have a will. The distribution of assets would follow the specified order of priority for heirs under California law.
As you mentioned that you are your father's only son, you may have a right to a portion of your grandmother's estate depending on the circumstances. However, other factors could also come into play, such as the existence of other relatives or beneficiaries named in the will, any legal documents your father may have left, or whether he had any surviving children (your siblings) who might also have a claim to the estate.
It's important to consult with an attorney who specializes in probate and estate law to determine your rights and entitlements to your grandmother's estate based on the specific details of your family's situation and the applicable laws in California. They can guide you through the legal process and ensure that your rights are protected.