"He says he comes from the order of the White Fathers, missionaries to the nomadic Bedouin tribes "
Cardinal Charles Lavigerie
The society of the White Fathers
was founded in 1868 by Cardinal Lavigerie, Archbishop of Algeria
. Now known as Missionaries of Africa, it is an international society working to alleviate suffering in Africa. They traditionally wore the white robes of Algerian Arabs and spoke their language in order to live, as far as possible, like the Africans.
Official web site