[Ruy Dias de Bivar]

More here.

http://www.nebraskastudies.org/0300/frameset_reset.html?http://www.nebraskastudies.org/0300/stories/0301_0115.html

Read this introduction to THE PAWNEE NATION on page XVI.

http://books.google.com/books?id=ym4upG2eexAC&pg=PR16&lpg=PR16&dq=Don+Pedro+de+Villasur+battle+with+pawnees&source=bl&ots=bI9RyyIlOp&sig=k1875fSFgt0utrPZXbxiV9lIEcs&hl=en&sa=X&ei=0vAsU9SDA-Sw2wWT0oHYDQ&ved=0CFIQ6AEwBg#v=onepage&q=Don%20Pedro%20de%20Villasur%20battle%20with%20pawnees&f=false

[SunkenCiv]

Thanks.