This is a representation of the coat of arms of the Roman Catholic Archdiocese of Saint Louis.
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:Croissant Héraldique.svg by Odejea (talk · contribs)
 File:Coat of arms of the Lordship of Ireland.svg by NsMn (talk · contribs)
 File:Coa Illustration Cross Fleur-de-lys 2.svg by Madboy74 (talk · contribs)
Own work
Alekjds