Complex sentence: Stanton's son and heir was not interested in a government purchase of his island and took steps to avoid such events by forging an agreement with The Nature Conservancy and the property was transferred to the organization upon his death.
Split into simpler sentences: Stanton's son and heir was not interested in a government purchase of his island. He took steps to avoid such events by forging an agreement with The Nature Conservancy, and the property was transferred to the organization upon his death.