So, you are creating a massive family trust for your “descendants” or “heirs”. Maybe you are placing some of the family’s private business interests in the trust, or perhaps creating one of those so called multi-generational 500 year “dynasty” trusts. Or, perhaps nothing that sexy: a simple revocable trust that becomes irrevocable when you die, to benefit your spouse and then children and grandchildren for 2, 3, 4 or perhaps even more generations.