"My Olga" died in San Francisco October 18, 1928. She is buried south of the city in Colma, California.
She had three children from her first marriage to Baron Ivan Ferdidnandovich von Taube: Elizabeth, Olga and George von Taube. She abruptly left Russia in 1892-93 arriving in New York originally then on the west coast. She divorced von Taube in Los Angeles on May 2, 1895 and her second marriage to Leo William Zorin (arrived in New York Nov 15, 1893) was recorded on May 11, 1895. Between the years of 1896-1900 she gave birth to three daughters Alexandra, Marguerite and Annette.
Olga's mother name was Maria Dolgorouky Dolgorouky (she married her distant cousin Alexander Vasilevich Dolgorouky) Benckendorff (married Count Paul Benckendorff in Saint Petersburg, Russia in 1897). It's so complicated to get these names straight. Please feel free to ask for more details and clarification.
Thank you for your interest and help.