Dorothy N. Dilegge Coulson; of Belle Vernon; passed away on Monday; March 19; 2012; in Monongahela Valley Hospital. She was born in Monessen; and had been educated in the Monessen School District. She and her late husband; T. Dale Coulson; were the proprieters of Coulson’s Sales and Service. Surviving are her four sons; D. Robert Coulson and wife; Hillary Coulson; of Wilmington; Del.; Donald T. Coulson and wife; Donna; of Speers; David P. Coulson and wife; Marianne; of Fayette City; and Dean R. Coulson and wife; Lori; of Charleroi; six grandchildren; Ann Coulson; Jeffrey Coulson; Todd Coulson; Jamie Coulson Bowers and husband; Dave; Don Coulson Jr.; and Shawn Coulson and wife; Kimberly; two great-grandchildren; and a brother; David Dilegge; of Ellicott City; Md. Funeral arrangements have been entrusted to the RHOME FUNERAL HOME INC.; Family Owned and Operated as a Member of the Golden Rule; 1209 Grand Blvd.; Monessen; where friends will be welcomed on Thursday from 1 to 3 and 6 to 8 p.m. Funeral services will be held in the funeral home on Friday. Internment will follow at Belle Vernon Cemetery.