Silicon Valley Newspaper Group, a chain of South Bay weeklies owned by MediaNews Group, is adding two more neighborhood community papers. The Cambrian Resident, has an initial circulation of 14,879 and is being delivered to homes in the Cambrian Park area of San Jose. It is edited by Moryt Milo. The Branham Avenue paper, circulation of 12,471, is going to homes within a several-mile radius of Branham Avenue and Almaden Expressway south of Willow Glen and north of Almaden Valley. It is edited by Linda Taaffe.