Nancy's parents purchased a home in Napa CA for the couple to live in after Nancy was released from prison. I spoke to a retired Napa police officer who told me that Duncan and Joanne lived in the home for a while with Nancy's oldest child. After Nancy's release from serving time for Lauren Willetts murder she eventually established residence there.
The police officer also told me that he lived on the same street and informally was asked to keep an eye on the Monforts during the time they lived there. He said that they did not live there under the name of Monfort but were allowed to stay there under an assumed name. The officer could not remember, or did not want to tell me, the assumed name.
Once Monfort's parole was finished they were out of there and the house was sold.