While she lived in Mount Washington, she was a parishioner and volunteer at the Roman Catholic Shrine of the Sacred Heart. After moving to Gambrills some years ago, she became a communicant of Our Lady of the Fields Roman Catholic Church.
In addition to hosting family parties, Mrs. Lannon enjoyed playing the piano, singing and dancing, and vacationing at the beach.
A Mass of Christian burial will be offered at noon Tuesday at St. Pius X Roman Catholic Church, 6428 York Road in Rodgers Forge.
Mrs. Lannon is survived by two sons, Paul H. Lannon of Gambrills and Martin T. Lannon of Elkridge; a daughter, Patricia G. Ryan of Rodgers Forge; and seven grandchildren.