Peter E Groff age: 41 Known as: Peter E Croff Related to:Zachary Gross, 50 Has lived in:Cambridge, MA Andover, MA Weymouth, MA Somerville, MA Peter F Groff age: 88 Known as: Tel G Childrens Related to:David Brown, 24 Teresa Davidian, 68 Has lived in:Cambridge, MA North Andover, MA Andover, MA Boston, MA