The Philadelphia home where Oscar-winning actress Grace Kelly grew up and accepted a marriage proposal from Prince Rainier III of Monaco in 1955 is now in the hands of the royal family. Her son, Prince Albert of Monaco, has confirmed to People Magazine that he was the recent purchaser of the six-bedroom, 2.5-story Colonial home in the city’s East Falls section. He said in an interview on the magazine’s website posted Friday that the house is “very special to our family.” He said he was happy to have saved it “from a near certain death or development.” […] The home...