Mary A. Conroy, a longtime Democratic state legislator from Prince George’s County who retired in 2007 as deputy majority leader of the Maryland House of Delegates, died Aug. 9 at her home in Annapolis. She was 82.

The cause was complications from hepatitis, said Trish Conroy, a daughter-in-law.

Mrs. Conroy entered office in 1982, when she took over the state Senate seat of her late husband, Edward T. Conroy.

Her husband, a lawyer and decorated Army officer who lost an arm in battle during the Korean War, was first elected to state office in 1962. He was defeated in a 1980 bid for the U.S. Senate by the Republican incumbent, Charles McC. Mathias Jr.

After her husband died of cancer in May 1982, Mrs. Conroy served out the remaining seven months of his term. She was appointed to the House of Delegates in 1986, when the previous delegate became a judge. She was later elected to four more terms, serving 20 years in the State House from a district that included Bowie and other parts of Prince George’s.

Mary A. Conroy served 20 years in the Maryland House of Delegates, representing Prince George’s County. She died Aug. 9 at 82. (File Photo)

Mrs. Conroy was a member of the Democratic leadership in the House of Delegates, becoming deputy majority leader in 2003. She was vice chair of the Rules and Executive Nominations Committee from 1994 to 2007.

She sponsored legislation to exempt victims of the attacks of Sept. 11, 2001, from estate taxes; to reduce personal income taxes; and to provide greater support for education and veterans.

“During my years in Annapolis,” she said in 2002, “I have never misled the voters, [and] I do not seek publicity.”

Mary Ann O’Connor was born Dec. 25, 1931, in New York City. She and her husband were married in 1952 and moved to Bowie in 1961.

Mrs. Conroy attended Prince George’s Community College and was a member of Sacred Heart Catholic Church in Bowie. Active in many civic and charitable organizations, she was a chapter director of the American Cancer Society and an executive board member of what is now United Cerebral Palsy on the Potomac. She was also a past state commander of the Disabled American Veterans Auxiliary.

Survivors include two sons, Edward Conroy of Beltsville, Md., and Kevin Conroy, a former Bowie City Council member, of Crofton, Md.; a brother; four grandchildren; and two great-grandchildren.

After retiring from the legislature in 2007, Mrs. Conroy settled in Annapolis.

“I have a reputation of constituent service second to none,” she told The Washington Post in 1998. “The people of my district know when they have a problem, I will do my very best to solve it for them or get them the help they need.”