Former US Rep. William Delahunt of Massachusetts has died at age 82

Longtime U.S. Rep. William D. Delahunt of Massachusetts, a Democratic stalwart who postponed his own retirement from Washington to help pass former President Barack Obama's legislative agenda, has died following a long-term illness, his family announced.

Delahunt died Saturday at his home in Quincy, Massachusetts, at the age of 82, news reports said.

Delahunt served 14 years in the U.S. House of Representatives, from 1997 to 2011, for Massachusetts’s 10th congressional district. He also was the Norfolk County district attorney from 1975 to 1996 after serving in the Massachusetts House of Represenatives from 1973 to 1975.

The Delahunt family issued a statement Saturday saying he passed away “peacefully,” but did not disclose his specific cause of death, news reports said.