Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Margaret Ellen Swain, Practice Areas No known practice areas. is located in the city of Riderwood, the state of Maryland. Attorney legal address Po Box 219Riderwood, MD, 21139-0219. For more information, please call (443) 857-3350 Your comments* (not for publishing) * — Required information Margaret Ellen Swain ← View details Po Box 219Riderwood, MD, 21139-0219, Riderwood, Maryland (443) 857-3350