Elmshaven in St. Helena, California, was the last home of Ellen G. White (1827-1915).
"During her lifetime [Mrs. White] wrote more than 5,000 periodical articles and 40 books....She is the most translated woman writer in the entire history of literature, and the most translated American author of either gender. Her writings cover a broad range of subjects, including religion, education, social relationships, evangelism, prophecy, publishing, nutrition, and management. Her life-changing masterpiece on successful Christian living, Steps to Christ, has been published in more than 140 languages."
From "Ellen G. White: A Brief Biography" by Arthur L. White, http://www.whiteestate.org/about/egwbio.asp.