Thomas Kinkade, the “Painter of Light,” resided in his mansion in Monte Sereno until his untimely death at the age of 54 due to an accidental overdose of alcohol and valium on Good Friday, April 6, 2012. His estranged wife of 30 years, Nanette Kinkade, and their four children would normally be the rightful heirs to Mr. Kinkade’s estimated $66 million fortune. But Mrs. Kinkade filed for divorce two years before he died, and, for the last 18 months of his life, Mr. Kinkade was in a relationship with a young woman, Amy Pinto-Walsh.