(LENOX, Mass.) – Jazz pianist Ellis Marsalis, Jr. — patriarch of the Marsalis musical dynasty — and one of his jazz royalty sons, trombonist Delfeayo Marsalis, along with their quartet, bring a program entitled “The Last Southern Gentlemen” to Ozawa Hall at Tanglewood on Sunday, August 17, 2014, at 8 p.m. performing standards and original…