Suggest an update Name* Categories* State* Locality* ZIP* Street address* Phone* Website* Company description* Lawyer William N. Seibel Jr., Practice Areas Criminal Defense Attorneys. is located in the city of Ofallon, the state of Missouri. Attorney legal address William N. Seibel Jr.423 Woodlawn AveOfallon, MO, 63366. For more information, please call (636) 980-1700 Your comments* (not for publishing) * — Required information William N. Seibel Jr. ← View details William N. Seibel Jr.423 Woodlawn AveOfallon, MO, 63366, Ofallon, Missouri (636) 980-1700