A palatial mansion on a more than 500-acre estate in Penn Valley was home to its owner, his wife and their two sons who lived a life of wealth and privilege. The mansion was also home to another group of people: more than 50 employees who worked in the mansion as live-in servants as well as the dozens, including live-in veterinarians, who worked the dairy farm and tended to a prize herd of Ayrshire cattle imported from Scotland.For years Percival Roberts and his family led a charmed life i… (View original article)