abstract:Deloria is a Native American surname, derived from the name of a French trapper, Phillippe des Lauriers, who settled and married into a Yankton community of the Sioux,Vine Deloria, James Treat, For This Land: Writings on Religion in America (Routledge, 1999), ISBN 978-0-415-92115-2, p.5 (excerpt available at Google Books).