Who is Charles Maan from The Haj and what is their importance?

Charles Maan was a Christian Arab and a delegate to the Great Democratic Unity Conference in Amman. He lived and taught at the Birah Camp near Ramellah. His daughter was a nun at the Sisters of Zion Convent in Jerusalem. Ishmael found out that Maan was a dissenter and arranged a meeting with Ibrahim. Ibrahim invites him to meet with him and Taji after the conference. Maan suggests the convent in Jerusalem. They meet there and make plans for a convention in Bethlehem where Maan, Ibrahim and Taji have themselves named as delegates to the conference in Zurich. At the conference, Maan receives word that the Vatican wants him to relocate the Arab Christians that are living in the camps. Maan is murdered in July, 1951.