Complex sentence: After their deaths, the Eaton Street home containing the doll was sold to Myrtle Reuter, who owned it for 20 years until the property was sold to the current owners, who operate it as a guest house.
Split into simpler sentences: After their deaths, the house was sold to Myrtle Reuter, who owned it for 20 years. The house was later sold to the current owners who operate it as a guest house.