This is a representation of the coat of arms of the former Roman Catholic Diocese of Natchez in Mississippi, U.S.A. The diocese was renamed in 1956 and suppressed in 1977.
The following Commons images were used to create this image:

 File:Roman Catholic Diocese of Erie.svg by Niagara (talk · contribs) (mitre)
 File:Old French Escutcheon.svg by Masur (talk · contribs)
 File:Héraldique meuble Soleil avec visage.svg by Bruno Vallette (talk · contribs)
 File:Cross-Potent-Heraldry.svg by AnonMoos (talk · contribs)
Own work
Alekjds