Howard LeibowitzHoward Liebowitz, an aide to Mayors Raymond Flynn and Thomas Menino with an encyclopedic knowledge of Boston municipal politics, died Sunday after suffering a heart attack in his Jamaica Plain home. He was 63.

Leibowitz was described as a man practiced in facilitating political compromise, due in no small part to his extensive network of friends across the city, according to an article in the Boston Globe.

Angela Menino, the late mayor’s wife, told the Globe that her husband said Leibowitz had “the biggest Rolodex of anyone and could come up with the most amazing ideas for making the city better because of all of those different friends.”

Leibowitz grew up in public housing in Brighton before moving to Mattapan and attending Boston Technical High School, afterwards completing his education at Brandeis University.

He was a campaign worker, a housing analyst with the Flynn administration, and as a jack-of-all-trades federal and state liaison, according to the Globe.

Leibowitz began working in April for Enterprise Community Partners in Washington, a nonprofit organization focused on creating affordable housing. Social issues, particularly providing resources to the less-advantaged, was a chief driver in Leibowitz’s career.

After decades in mayoral administrations, Leibowitz had an intuitive understanding for the sometimes convoluted and arcane processes of municipal politics. He took point on social issues, to great success, Flynn told the Globe.

City officials praised Leibowitz on Monday for his dedication to public service and his uncommonly kind and congenial approach to political advocacy.

“Howard represented all that is good and decent about politics: honesty, kindness, and loyalty,” Flynn told the Globe. “His agenda was about helping people and the values of social and economic justice.”