John Joseph "Jack" Pyne Sr., 71, the prominent trial attorney who was killed Jan. 5 in a car accident on Interstate 66, was a second-generation native Washingtonian and a civil litigator for more than 40 years.

According to Virginia State Police, Mr. Pyne was sitting in his disabled car on the exit to the Capital Beltway about 3:30 a.m. when it was struck from behind by a tractor-trailer. He was on his way to the Chevy Chase office of his firm, Pyne & Derry, which he had established in 1986.

"He had a great way with a jury," said his partner, Peter E. Derry. "His summations and final arguments were renowned."

Among his more notable cases were a successful libel suit filed in 1994 by D.C. police Capt. Robert White against the Fraternal Order of Police and a judgment in the late 1980s against Prince George's County on behalf of Donald Henley, a young boy killed by a prisoner on work release.

He also represented underwater explorer Norman Scott in a mid-1970s lawsuit against the Smithsonian Institution involving the raising of a sunken Civil War battleship.

He was the 1946 valedictorian of Gonzaga High School and a 1950 cum laude graduate of Georgetown University, where he also received law degrees.

In the late 1950s, he served in the military courts with the U.S. Air Force judge advocate general and worked as assistant general counsel at the D.C. Transit Co. In 1960, he joined the law firm of Frost & Towers and in 1972 formed McChesney & Pyne, both of Washington.

His personal interests included golf and solving crossword puzzles.

His marriages to Helen G. Taney and Rosemary McDermott Keyser ended in divorce.

Survivors include his wife, Betty C. Pyne of Vienna; seven children from his first marriage, Andrew F. Pyne of Fairfax, H. Maureen Pyne of San Francisco, Laurie Pyne O'Reilly of Washington, John Joseph Pyne Jr. of Atlanta, Thomas Emmet Pyne of Chantilly, Michael Gallagher Pyne of Falls Church and Cathleen J. Pyne of Washington; two daughters from his second marriage, Corinne Pyne Skevington of Annandale and Jennifer Pyne Rowan of Chevy Chase; four sisters, Frances M. Pyne and Mary E. Beines, both of Washington and Nancy J. Walker and Patricia M. Doherty, both of Sunnyvale, Calif.; and 21 grandchildren.