Complex sentence: Spencer Ponsonby-Fane died in 1915, leaving his estate to his eldest son John, who in turn died just a year after inheriting, leaving the estate to his son Richard.
Split into simpler sentences: Spencer Ponsonby-Fane died in 1915, leaving his estate to his eldest son John. John Ponsonby-Fane died just a year after inheriting leaving the estate to his son Richard.