Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer Diane Jeanette O'Brien-Holcomb, Practice Areas No known practice areas. is located in the city of Gambrills, the state of Maryland. Attorney legal address 3102 Arrowhead Farms RdGambrills, MD, 21054. For more information, please call (410) 451-5673 Your comments* (not for publishing) * — Required information Diane Jeanette OBrien-Holcomb ← View details 3102 Arrowhead Farms RdGambrills, MD, 21054, Gambrills, Maryland (410) 451-5673