David Christopher

David Christopher first met Ronald Reagan through his roommate at Penn State University — the late U.S. Sen. Richard Schweiker.

Although the future president was active in politics but not a career politician, Mr. Reagan’s ideas resounded with Mr. Christopher.

“He was very passionate about a lot of those things Reagan believed in,” said Amy Tiemann of Mt. Lebanon, a daughter of Mr. Christopher’s. “Family, hard work, country. The same morals and beliefs.”

Mr. Christopher, a Mt. Lebanon accountant who became involved in local politics and the arts community, died Friday at age 87. He had been living at Providence Point retirement community in Scott with his wife, Jacqueline.

A self-described “Reaganite,” Mr. Christopher was chairman of the Allegheny County Republican Committee in the 1980s and ran unsuccessfully against Allegheny County Controller Frank J. Lucchino in 1991. Mr. Christoper also served two stints on Mt. Lebanon’s school board.

Mike O’Connell, a local consultant who has worked on numerous Republican campaigns, said Mr. Christopher was one of the late Mr. Reagan’s earliest and most vocal supporters in Pennsylvania. Some were surprised Mr. Christopher didn’t follow the president to Washington, D.C., and work in his administration, Mr. O’Connell said.

Instead, Mr. Christopher assumed the role of local committee leader, “bringing a measure of order to a county party that was struggling” following a period of infighting in the 1970s, Mr. O’Connell said.

“He was able to make significant difference in righting the ship,” he said.

Mr. Christopher, who grew up in Beaver Falls,…