Complex sentence: In 1944, Edge purchased Morven, the historic Princeton, New Jersey, home of Richard Stockton, from the Stockton family subject to the proviso that Morven would be given to the state of New Jersey within two years of Edge's death.
Split into simpler sentences: In 1944, Edge purchased Morven, the historic Princeton, New Jersey home of Richard Stockton, from the Stockton family. The sale was subject to the condition that Morven would be given to the state of New Jersey within two years of Edge's death.