Daniel A. Gibbons, 61, a consultant whose work was published through the Project on National Security Reform, a nonpartisan research initiative, died May 17 at his home in Washington.

He had cancer, said his wife, Tommye Grant.

Before becoming an independent consultant in 2004, Mr. Gibbons did research for the federal government and the Center for Strategic and International Studies, a public policy institution, according to his wife. Earlier in his career, he worked at Edgar Cayce’s Association for Research and Enlightenment in Virginia Beach, she said.

Daniel Asher Gibbons was born in Detroit. He received a bachelor’s degree in law and society from American University in 1999 and a master’s degree in national security studies from Georgetown University in 2002. At the time of his death, he was pursuing a second master’s degree from Georgetown.

Mr. Gibbons was a lector at Our Lady of Victory Catholic Church in the District and served as president of its Society of St. Vincent de Paul conference.

His first marriage, to Mary Baker, ended in divorce.

Survivors include his wife, Tommye Grant of Washington, whom he married in March; four stepchildren, Milton Grant and Tracy Grant, both of Boston, Matthew Grant of Greenville, S.C., and Trisha Grant of Washington; his mother, Joan Probst Gibbons of Granton, Wis.; three brothers; four sisters; and a granddaughter.

— Emily Langer