Obituaries of residents from the District, Maryland and Northern Virginia.

Patricia Young, NSA mathematician

Patricia Young, 66, mathematician with the National Security Agency from 1972 to 2013, died Dec. 10 at a care facility in Annapolis. The cause was cancer, said a son, Laurence Young.

Mrs. Young, a resident of Davidsonville, Md., was born Patricia Lang in Chicago and had lived in the Washington area since 1972. She played clarinet and was a founding member of the Bay Winds Band, a community wind ensemble.

P.J. Edington, IBM executive, lobbyist

P.J. Edington, 66, a government and regulatory affairs executive at IBM who lobbied to make computers and communications technology more widely accessible, including to the blind, died Dec. 8 at her home in Alexandria, Va. The cause was breast cancer, said her husband, Will Edington.

Mrs. Edington was born Patricia Jo Marschner in Elmhurst, Ill. Beginning in the mid-1970s, she promoted awareness of domestic violence and child abuse as a senior associate at the Center for Women Policy Studies in Washington. She led the Center for Office Technology, a computer-industry trade group, before joining IBM in 2002 and taking the helm of its global technology-accessibility strategy.

In 2016 the Viscardi Center, a nonprofit network that aids people with disabilities, honored her for her work.

John Frisby, banking executive

John Frisby, 84, who spent decades as an executive in the mortgage-banking industry in the Washington area, died Jan. 2 at an assisted living center in Bethesda, Md. The cause was complications from a stroke, said a daughter, Maureen Frisby.

Mr. Frisby, a native Washingtonian, was president of Nationwide Lending Group and FSB Investors, and held executive positions with other companies before retiring in 1994. He spent many years in Ponte Vedra Beach, Fla., before returning to the Washington area in 2015.

— From staff reports